Mistral Medium 3.5vsGrok Code Fast 1
Mistral Medium 3.5 | Grok Code Fast 1 | |
|---|---|---|
| Specifications | ||
ParametersA rough measure of how big the model is. More parameters usually means more capable and more expensive to run, though it is a poor guide on its own — a smaller, newer model often beats a larger, older one. | 128B | — |
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | 256k | — |
| API pricingUSD per 1M tokens · lower wins · base tier | ||
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it. | $1.50 | $1.00 |
Output priceWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one. | $7.50 | $2.00 |
Cached input priceA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again. | — | $0.20 |
| Benchmarks | ||
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 77.6% | 70.8% |
| Overview | ||
| Company | Mistral | SpaceXAI |
| Release date | Apr 29 2026 | Aug 28 2025 |
| Access | Open Weight | Proprietary |
Other comparisons
Mistral Medium 3.5vsClaude Fable 5.1Grok Code Fast 1vsClaude Fable 5.1Mistral Medium 3.5vsGPT-6 AstraGrok Code Fast 1vsGPT-6 AstraMistral Medium 3.5vsGemini 3.8 FlashGrok Code Fast 1vsGemini 3.8 FlashMistral Medium 3.5vsMuse Spark 1.3Grok Code Fast 1vsMuse Spark 1.3Mistral Medium 3.5vsDeepSeek-V4.1-FlashGrok Code Fast 1vsDeepSeek-V4.1-FlashMistral Medium 3.5vsKimi K3Grok Code Fast 1vsKimi K3
Frequently asked questions
Mistral Medium 3.5 leads Grok Code Fast 1 on 1 of the 1 benchmark they both report (SWE-Bench Verified). Grok Code Fast 1 is cheaper on both input and output: $1.00 vs $1.50 per million input tokens, and $2.00 vs $7.50 per million output tokens. Figures are base-tier rates. Grok Code Fast 1 shipped 244 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.
Mistral Medium 3.5 is open weight, while Grok Code Fast 1 is proprietary.
On SWE-Bench Verified, Mistral Medium 3.5 leads at 77.6% vs Grok Code Fast 1 at 70.8%.