[WIP] Add DurableAgent deprecation notice by karthikscale3 · Pull Request #2101 · vercel/workflow

karthikscale3 · 2026-05-23T00:29:26Z

Summary

Adds deprecation notices on DurableAgent across v4/v5 cookbook, API reference, streaming, and cookbook index pages
Recommends WorkflowAgent from @ai-sdk/workflow for new durable agent workflows
Updates AI SDK integration docs to prefer WorkflowAgent over DurableAgent in comparison tables and guidance
Adds @deprecated JSDoc on the DurableAgent class in @workflow/ai

Test plan

pnpm --filter @workflow/docs-typecheck typecheck
Review v4/v5 Durable Agent cookbook and API reference pages render the warning callout
Confirm links to https://ai-sdk.dev/v7/docs/agents/workflow-agent#workflowagent resolve correctly

Made with Cursor

Co-authored-by: Cursor <cursoragent@cursor.com>

Point new durable agent work to WorkflowAgent from @ai-sdk/workflow and link the AI SDK migration guide across v4/v5 cookbook, API reference, streaming, and source JSDoc. Co-authored-by: Cursor <cursoragent@cursor.com>

changeset-bot · 2026-05-23T00:29:30Z

⚠️ No Changeset found

Latest commit: 9a8a73f

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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github-actions · 2026-05-23T00:29:35Z

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.031s (-30.7% 🟢)	1.005s (~)	0.974s	10	1.00x
💻 Local	Next.js (Turbopack)	0.043s	1.006s	0.962s	10	1.41x
🐘 Postgres	Nitro	0.045s (-52.9% 🟢)	1.011s (-3.1%)	0.966s	10	1.46x
🐘 Postgres	Express	0.046s (-20.7% 🟢)	1.012s (~)	0.966s	10	1.50x
🐘 Postgres	Next.js (Turbopack)	0.056s	1.012s	0.955s	10	1.83x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.318s (+35.0% 🔺)	2.395s (+12.2% 🔺)	2.077s	10	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.075s (-4.5%)	2.005s (~)	0.930s	10	1.00x
🐘 Postgres	Nitro	1.079s (-5.3% 🟢)	2.008s (~)	0.929s	10	1.00x
🐘 Postgres	Express	1.081s (-5.7% 🟢)	2.010s (~)	0.929s	10	1.01x
💻 Local	Next.js (Turbopack)	1.084s	2.006s	0.922s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	1.121s	2.008s	0.887s	10	1.04x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.705s (-9.1% 🟢)	3.836s (+0.8%)	2.131s	10	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.402s (-5.1% 🟢)	11.019s (~)	0.617s	3	1.00x
💻 Local	Express	10.414s (-4.6%)	11.020s (~)	0.605s	3	1.00x
🐘 Postgres	Nitro	10.442s (-3.9%)	11.017s (~)	0.575s	3	1.00x
💻 Local	Next.js (Turbopack)	10.522s	11.023s	0.501s	3	1.01x
🐘 Postgres	Next.js (Turbopack)	10.736s	11.017s	0.281s	3	1.03x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	13.768s (-18.9% 🟢)	16.151s (-19.3% 🟢)	2.382s	2	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.466s (-10.0% 🟢)	14.026s (-6.7% 🟢)	0.560s	5	1.00x
🐘 Postgres	Express	13.474s (-7.6% 🟢)	14.022s (-6.7% 🟢)	0.548s	5	1.00x
🐘 Postgres	Nitro	13.522s (-7.4% 🟢)	14.016s (-6.7% 🟢)	0.494s	5	1.00x
💻 Local	Next.js (Turbopack)	13.704s	14.029s	0.325s	5	1.02x
🐘 Postgres	Next.js (Turbopack)	14.112s	15.017s	0.906s	4	1.05x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	21.208s (-57.8% 🟢)	23.208s (-55.8% 🟢)	2.000s	3	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	11.882s (-28.4% 🟢)	12.020s (-29.4% 🟢)	0.138s	8	1.00x
🐘 Postgres	Express	11.891s (-15.1% 🟢)	12.018s (-17.6% 🟢)	0.127s	8	1.00x
🐘 Postgres	Nitro	12.061s (-13.6% 🟢)	12.876s (-10.0% 🟢)	0.815s	7	1.02x
💻 Local	Next.js (Turbopack)	12.297s	13.024s	0.727s	7	1.03x
🐘 Postgres	Next.js (Turbopack)	13.156s	14.018s	0.862s	7	1.11x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	31.717s (-73.8% 🟢)	33.858s (-72.6% 🟢)	2.141s	3	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.139s (-9.7% 🟢)	2.007s (~)	0.869s	15	1.00x
🐘 Postgres	Nitro	1.143s (-10.3% 🟢)	2.007s (~)	0.864s	15	1.00x
💻 Local	Express	1.158s (-22.2% 🟢)	2.006s (~)	0.848s	15	1.02x
💻 Local	Next.js (Turbopack)	1.208s	2.006s	0.798s	15	1.06x
🐘 Postgres	Next.js (Turbopack)	1.211s	2.007s	0.795s	15	1.06x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.297s (+15.3% 🔺)	5.069s (+9.6% 🔺)	1.772s	6	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.187s (-49.5% 🟢)	2.007s (-33.3% 🟢)	0.819s	15	1.00x
🐘 Postgres	Express	1.206s (-48.9% 🟢)	2.007s (-33.3% 🟢)	0.801s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.337s	2.007s	0.671s	15	1.13x
💻 Local	Express	1.624s (-45.0% 🟢)	2.005s (-41.9% 🟢)	0.381s	15	1.37x
💻 Local	Next.js (Turbopack)	1.679s	2.005s	0.326s	15	1.41x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.540s (-2.2%)	5.437s (+6.4% 🔺)	1.896s	6	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.283s (-63.1% 🟢)	2.007s (-49.9% 🟢)	0.724s	15	1.00x
🐘 Postgres	Express	1.314s (-62.3% 🟢)	2.007s (-50.0% 🟢)	0.692s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.584s	2.008s	0.423s	15	1.23x
💻 Local	Express	4.346s (-47.9% 🟢)	4.870s (-46.0% 🟢)	0.525s	7	3.39x
💻 Local	Next.js (Turbopack)	4.430s	4.867s	0.437s	7	3.45x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	5.099s (+20.3% 🔺)	6.763s (+10.4% 🔺)	1.664s	5	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.135s (-9.7% 🟢)	2.008s (~)	0.872s	15	1.00x
🐘 Postgres	Express	1.143s (-9.1% 🟢)	2.008s (~)	0.866s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.193s	2.007s	0.814s	15	1.05x
💻 Local	Express	1.218s (-35.7% 🟢)	2.005s (-15.2% 🟢)	0.787s	15	1.07x
💻 Local	Next.js (Turbopack)	1.269s	2.006s	0.737s	15	1.12x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.833s (+9.8% 🔺)	4.401s (+1.2%)	1.568s	7	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.204s (-48.5% 🟢)	2.008s (-33.3% 🟢)	0.803s	15	1.00x
🐘 Postgres	Express	1.209s (-48.4% 🟢)	2.008s (-33.3% 🟢)	0.799s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.322s	2.007s	0.685s	15	1.10x
💻 Local	Express	1.676s (-46.5% 🟢)	2.005s (-46.7% 🟢)	0.330s	15	1.39x
💻 Local	Next.js (Turbopack)	1.892s	2.221s	0.328s	14	1.57x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.510s (+10.0% 🔺)	5.400s (+12.7% 🔺)	1.890s	6	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.300s (-62.6% 🟢)	2.007s (-49.9% 🟢)	0.707s	15	1.00x
🐘 Postgres	Express	1.336s (-61.8% 🟢)	2.008s (-49.9% 🟢)	0.672s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.586s	2.074s	0.489s	15	1.22x
💻 Local	Express	4.571s (-48.1% 🟢)	5.177s (-44.2% 🟢)	0.607s	6	3.52x
💻 Local	Next.js (Turbopack)	4.792s	5.178s	0.386s	6	3.69x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.878s (-24.0% 🟢)	6.524s (-20.2% 🟢)	1.646s	5	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.448s (-46.6% 🟢)	1.024s (~)	0.575s	59	1.00x
🐘 Postgres	Nitro	0.452s (-45.0% 🟢)	1.006s (~)	0.555s	60	1.01x
💻 Local	Express	0.482s (-51.0% 🟢)	1.004s (-6.7% 🟢)	0.522s	60	1.07x
💻 Local	Next.js (Turbopack)	0.560s	1.004s	0.445s	60	1.25x
🐘 Postgres	Next.js (Turbopack)	0.682s	1.006s	0.324s	60	1.52x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	5.342s (-71.9% 🟢)	7.132s (-66.6% 🟢)	1.790s	9	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.056s (-46.5% 🟢)	1.631s (-27.7% 🟢)	0.575s	56	1.00x
🐘 Postgres	Nitro	1.088s (-43.5% 🟢)	2.007s (-4.4%)	0.919s	45	1.03x
💻 Local	Express	1.171s (-61.2% 🟢)	2.005s (-44.1% 🟢)	0.834s	45	1.11x
💻 Local	Next.js (Turbopack)	1.370s	2.005s	0.635s	45	1.30x
🐘 Postgres	Next.js (Turbopack)	1.585s	2.007s	0.422s	45	1.50x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	14.206s (-58.9% 🟢)	16.092s (-56.3% 🟢)	1.886s	6	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.079s (-47.9% 🟢)	2.617s (-40.1% 🟢)	0.538s	46	1.00x
🐘 Postgres	Nitro	2.433s (-40.7% 🟢)	3.166s (-31.2% 🟢)	0.733s	38	1.17x
💻 Local	Express	2.587s (-71.9% 🟢)	3.007s (-70.0% 🟢)	0.420s	40	1.24x
💻 Local	Next.js (Turbopack)	3.010s	3.537s	0.526s	34	1.45x
🐘 Postgres	Next.js (Turbopack)	3.094s	4.009s	0.915s	30	1.49x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	28.226s (-78.3% 🟢)	30.877s (-76.6% 🟢)	2.651s	4	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.179s (-36.5% 🟢)	1.006s (~)	0.827s	60	1.00x
🐘 Postgres	Nitro	0.180s (-36.6% 🟢)	1.006s (~)	0.826s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.226s	1.006s	0.779s	60	1.26x
💻 Local	Express	0.388s (-30.7% 🟢)	1.004s (~)	0.615s	60	2.16x
💻 Local	Next.js (Turbopack)	0.493s	1.004s	0.510s	60	2.75x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.139s (+9.4% 🔺)	3.937s (+8.2% 🔺)	1.798s	16	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.285s (-44.1% 🟢)	1.006s (~)	0.721s	90	1.00x
🐘 Postgres	Nitro	0.293s (-41.0% 🟢)	1.006s (~)	0.714s	90	1.03x
🐘 Postgres	Next.js (Turbopack)	0.426s	1.017s	0.591s	89	1.49x
💻 Local	Express	2.015s (-19.8% 🟢)	2.534s (-15.8% 🟢)	0.519s	36	7.07x
💻 Local	Next.js (Turbopack)	2.208s	2.912s	0.704s	31	7.75x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.701s (+54.3% 🔺)	6.452s (+34.2% 🔺)	1.750s	14	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.597s (-24.5% 🟢)	1.006s (~)	0.409s	120	1.00x
🐘 Postgres	Express	0.631s (-22.9% 🟢)	1.006s (-1.1%)	0.375s	120	1.06x
🐘 Postgres	Next.js (Turbopack)	0.855s	1.023s	0.168s	118	1.43x
💻 Local	Express	9.164s (-18.1% 🟢)	9.793s (-18.0% 🟢)	0.629s	13	15.35x
💻 Local	Next.js (Turbopack)	10.236s	10.860s	0.624s	12	17.15x
💻 Local	Nitro	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	15.303s (+106.2% 🔺)	17.307s (+87.2% 🔺)	2.004s	7	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Stream Benchmarks (includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.129s (+467.2% 🔺)	2.005s (+99.6% 🔺)	0.009s (-23.1% 🟢)	2.017s (+98.1% 🔺)	0.887s	10	1.00x
🐘 Postgres	Express	1.131s (+451.6% 🔺)	1.996s (+99.9% 🔺)	0.001s (-37.5% 🟢)	2.010s (+98.7% 🔺)	0.879s	10	1.00x
🐘 Postgres	Nitro	1.138s (+455.1% 🔺)	2.002s (+100.3% 🔺)	0.001s (-26.7% 🟢)	2.009s (+98.7% 🔺)	0.871s	10	1.01x
💻 Local	Next.js (Turbopack)	1.153s	2.003s	0.009s	2.016s	0.863s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.200s	2.002s	0.001s	2.011s	0.811s	10	1.06x
💻 Local	Nitro	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.289s (-8.6% 🟢)	3.584s (-12.4% 🟢)	13.338s (+1288.2% 🔺)	17.413s (+211.5% 🔺)	15.124s	10	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.513s (+99.8% 🔺)	2.010s (+95.3% 🔺)	0.010s (+2.7%)	2.022s (+94.4% 🔺)	0.509s	30	1.00x
🐘 Postgres	Express	1.523s (+141.8% 🔺)	2.001s (+98.8% 🔺)	0.004s (+9.6% 🔺)	2.026s (+98.1% 🔺)	0.503s	30	1.01x
🐘 Postgres	Nitro	1.557s (+149.4% 🔺)	2.009s (+99.5% 🔺)	0.004s (-11.3% 🟢)	2.025s (+98.1% 🔺)	0.468s	30	1.03x
💻 Local	Next.js (Turbopack)	1.585s	2.010s	0.010s	2.023s	0.438s	30	1.05x
🐘 Postgres	Next.js (Turbopack)	1.660s	2.010s	0.004s	2.024s	0.365s	30	1.10x
💻 Local	Nitro	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.004s (-7.7% 🟢)	7.366s (-8.0% 🟢)	0.232s (-43.3% 🟢)	8.092s (-8.4% 🟢)	2.088s	8	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.649s (-33.1% 🟢)	1.034s (-17.1% 🟢)	0.000s (+106.9% 🔺)	1.042s (-17.2% 🟢)	0.393s	58	1.00x
🐘 Postgres	Express	0.662s (-31.1% 🟢)	1.032s (-19.2% 🟢)	0.000s (+21.1% 🔺)	1.055s (-19.3% 🟢)	0.393s	57	1.02x
🐘 Postgres	Next.js (Turbopack)	0.754s	1.036s	0.000s	1.060s	0.306s	57	1.16x
💻 Local	Express	1.305s (+6.5% 🔺)	2.013s (~)	0.000s (-10.0% 🟢)	2.015s (~)	0.710s	30	2.01x
💻 Local	Next.js (Turbopack)	1.428s	2.013s	0.000s	2.016s	0.588s	30	2.20x
💻 Local	Nitro	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.766s (+0.7%)	5.309s (+4.0%)	0.000s (+100.0% 🔺)	5.995s (+8.4% 🔺)	2.229s	11	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.250s (-29.5% 🟢)	1.998s (-8.3% 🟢)	0.000s (NaN%)	2.015s (-8.4% 🟢)	0.765s	30	1.00x
🐘 Postgres	Nitro	1.386s (-22.6% 🟢)	2.103s (-1.8%)	0.000s (-3.4%)	2.112s (-2.9%)	0.726s	29	1.11x
🐘 Postgres	Next.js (Turbopack)	1.489s	2.182s	0.000s	2.191s	0.701s	28	1.19x
💻 Local	Next.js (Turbopack)	2.825s	3.470s	0.001s	3.475s	0.649s	18	2.26x
💻 Local	Express	3.336s (-3.8%)	3.692s (-8.5% 🟢)	0.000s (-75.0% 🟢)	4.029s (~)	0.692s	15	2.67x
💻 Local	Nitro	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	5.904s (+28.7% 🔺)	7.464s (+23.9% 🔺)	0.000s (+Infinity% 🔺)	8.186s (+26.8% 🔺)	2.282s	8	1.00x
▲ Vercel	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Express	20/21
🐘 Postgres	Express	12/21
▲ Vercel	Express	21/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	💻 Local	11/21
Nitro	🐘 Postgres	21/21

Column Definitions

Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
Wall Time: Total testbench time (trigger workflow + poll for result)
Overhead: Testbench overhead (Wall Time - Workflow Time)
Samples: Number of benchmark iterations run
vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

💻 Local: In-memory filesystem world (local development)
🐘 Postgres: PostgreSQL database world (local development)
▲ Vercel: Vercel production/preview deployment
🌐 Turso: Community world (local development)
🌐 MongoDB: Community world (local development)
🌐 Redis: Community world (local development)
🌐 Jazz: Community world (local development)
🌐 Redis: Community world (local development)
🌐 Redis + BullMQ: Community world (local development)
🌐 Cloudflare: Community world (local development)
🌐 MySQL: Community world (local development)
🌐 Azure: Community world (local development)
🌐 NATS JetStream: Community world (local development)
🌐 Upstash: Community world (local development)

📋 View full workflow run

❌ Some benchmark jobs failed:

Local: failure
Postgres: success
Vercel: failure

Check the workflow run for details.

github-actions · 2026-05-23T00:29:37Z

🧪 E2E Test Results

❌ Some tests failed

Summary

	Passed	Failed	Skipped	Total
❌ ▲ Vercel Production	1219	3	219	1441
✅ 💻 Local Development	1615	0	219	1834
✅ 📦 Local Production	1615	0	219	1834
✅ 🐘 Local Postgres	1615	0	219	1834
✅ 🪟 Windows	131	0	0	131
✅ 📋 Other	741	0	176	917
Total	6936	3	1052	7991

❌ Failed Tests

▲ Vercel Production (3 failed)

nextjs-turbopack (2 failed):

sleepingWorkflow | wrun_01KS93Y7YM9S5FPQS2RCW512HJ | 🔍 observability
AbortController abortAnyInStepWorkflow: AbortSignal.any inside a step composes deserialized signals

nextjs-webpack (1 failed):

startFromWorkflow - calling start() directly inside a workflow function with hook communication | wrun_01KS948S0F6ZD2K80QWHPNNMHX | 🔍 observability

Details by Category

❌ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	105	0	26
✅ example	105	0	26
✅ express	105	0	26
✅ fastify	105	0	26
✅ hono	105	0	26
❌ nextjs-turbopack	127	2	2
❌ nextjs-webpack	128	1	2
✅ nitro	105	0	26
✅ nuxt	105	0	26
✅ sveltekit	124	0	7
✅ vite	105	0	26

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	106	25
✅ express-stable	106	25
✅ fastify-stable	106	25
✅ hono-stable	106	25
✅ nextjs-turbopack-canary	112	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	131	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	131	0
✅ nextjs-webpack-canary	112	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	131	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	131	0
✅ nitro-stable	106	25
✅ nuxt-stable	106	25
✅ sveltekit-stable	125	6
✅ vite-stable	106	25

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	106	25
✅ express-stable	106	25
✅ fastify-stable	106	25
✅ hono-stable	106	25
✅ nextjs-turbopack-canary	112	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	131	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	131	0
✅ nextjs-webpack-canary	112	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	131	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	131	0
✅ nitro-stable	106	25
✅ nuxt-stable	106	25
✅ sveltekit-stable	125	6
✅ vite-stable	106	25

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	106	25
✅ express-stable	106	25
✅ fastify-stable	106	25
✅ hono-stable	106	25
✅ nextjs-turbopack-canary	112	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	131	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	131	0
✅ nextjs-webpack-canary	112	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	131	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	131	0
✅ nitro-stable	106	25
✅ nuxt-stable	106	25
✅ sveltekit-stable	125	6
✅ vite-stable	106	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	131	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	106	25
✅ e2e-local-dev-tanstack-start-	106	25
✅ e2e-local-postgres-nest-stable	106	25
✅ e2e-local-postgres-tanstack-start-	106	25
✅ e2e-local-prod-nest-stable	106	25
✅ e2e-local-prod-tanstack-start-	106	25
✅ e2e-vercel-prod-tanstack-start	105	26

📋 View full workflow run

❌ Some E2E test jobs failed:

Vercel Prod: failure
Local Dev: success
Local Prod: success
Local Postgres: success
Windows: success

Check the workflow run for details.

vercel · 2026-05-23T00:29:38Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 23, 2026 12:33am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 23, 2026 12:33am
example-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-astro-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-express-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-fastify-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-hono-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-nitro-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-nuxt-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workbench-vite-workflow	Ready	Preview, Comment	May 23, 2026 12:33am
workflow-docs	Ready	Preview, Comment, Open in v0	May 23, 2026 12:33am
workflow-swc-playground	Ready	Preview, Comment	May 23, 2026 12:33am
workflow-tarballs	Ready	Preview, Comment	May 23, 2026 12:33am
workflow-web	Ready	Preview, Comment	May 23, 2026 12:33am

vercel

Additional Suggestion:

The skills/workflow/SKILL.md file was modified (deprecation notice added for DurableAgent) but the frontmatter version was not bumped from '1.8' to '1.9', violating the repository's AGENTS.md guidelines.

karthikscale3 added 30 commits January 27, 2026 10:51

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karthikscale3 and others added 6 commits May 15, 2026 14:22

Merge remote-tracking branch 'origin/main' into main

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Co-authored-by: Cursor <cursoragent@cursor.com>

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docs: add DurableAgent deprecation notice, recommend WorkflowAgent

9a8a73f

Point new durable agent work to WorkflowAgent from @ai-sdk/workflow and link the AI SDK migration guide across v4/v5 cookbook, API reference, streaming, and source JSDoc. Co-authored-by: Cursor <cursoragent@cursor.com>

karthikscale3 requested a review from a team as a code owner May 23, 2026 00:29

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karthikscale3 marked this pull request as draft May 23, 2026 00:37

karthikscale3 changed the title ~~Add DurableAgent deprecation notice~~ [WIP] Add DurableAgent deprecation notice May 23, 2026

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karthikscale3 commented May 23, 2026

Summary

Test plan

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📊 Benchmark Results

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

Summary

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🧪 E2E Test Results

Summary

❌ Failed Tests

Details by Category

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