[BUG] Incorrect context window Mistral Large 3

[SimonJang]

Problem (one or two sentences)

When using the native Mistral AI provider, the Mistral Large 3 model has a context window on 256k while in Roo Code it's 128k.

Context (who is affected and when)

Anybody using the native Mistral provider in Roo Code.

Reproduction steps

Setup a Mistral Large 3 model using the native Mistral provider will indicate the incorrect context window.

Expected result

Context window of 256k

Actual result

Context window of 128k

Variations tried (optional)

No response

App Version

3.39.3

API Provider (optional)

Mistral AI

Model Used (optional)

Mistral Large 3

Roo Code Task Links (optional)

No response

Relevant logs or errors (optional)

[roomote]

I've analyzed this issue and here's my proposed implementation plan:

Root Cause:
In packages/types/src/providers/mistral.ts, the mistral-large-latest model has contextWindow: 131_000 (approximately 128k), but Mistral Large 3 actually has a 256k context window according to Mistral's official documentation.

Proposed Fix:

1. Update packages/types/src/providers/mistral.ts line 51 to change contextWindow: 131_000 to contextWindow: 256_000 for the mistral-large-latest model

This is a one-line configuration change that will correctly reflect the model's actual capabilities.

Please mention @roomote in a comment saying that you approve this plan, and I'll proceed with the implementation.