Devstral 2 (123B)vsGPT-6 Sol
Devstral 2 (123B) | GPT-6 Sol | |
|---|---|---|
| Specifications | ||
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. | — | 1.05M |
| 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. | — | $2.00 |
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. | — | $10.00 |
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 |
Cheapest inputLowest input rate across third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $0.40Mistral | — |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $2.00Mistral | — |
| BenchmarksPublished by one model only | ||
DeepSWE 1.1Agentic coding — Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | — | 68.8% |
OSWorld 2.0Agentic computer use — Can the AI actually operate a computer — clicking, typing, and using real apps — to finish tasks on its own? Version 2.0 is a harder, refreshed task set. Higher is better. | — | 60.5% |
Agent's Last Exam · pass@1Agentic computer use — A hard set of desktop and operating-system tasks an AI agent has to finish by looking at the screen and working the machine itself. The score is the share it passes outright — partial credit does not count. Higher is better. | — | 56.4% |
AutomationBenchBusiness workflows — Tests whether the AI can run real multi-step business workflows — the kind of end-to-end office processes companies want to automate — from start to finish. Higher is better. | — | 33.2% |
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Dec 9 2025 | Sep 22 2026 |
| Access | Open Weight | Proprietary |
Other comparisons
Devstral 2 (123B)vsClaude Opus 5.5GPT-6 SolvsClaude Opus 5.5Devstral 2 (123B)vsGemini 3.8 FlashGPT-6 SolvsGemini 3.8 FlashDevstral 2 (123B)vsMuse Spark 1.3GPT-6 SolvsMuse Spark 1.3Devstral 2 (123B)vsGrok 4.7GPT-6 SolvsGrok 4.7Devstral 2 (123B)vsDeepSeek-V4.1-FlashGPT-6 SolvsDeepSeek-V4.1-FlashDevstral 2 (123B)vsKimi K3GPT-6 SolvsKimi K3
Frequently asked questions
Devstral 2 (123B) and GPT-6 Sol don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only GPT-6 Sol has a verified first-party API price: $2.00 per million input tokens and $10.00 per million output tokens. No pay-as-you-go API rate is tracked for Devstral 2 (123B). Devstral 2 (123B) shipped 287 days before GPT-6 Sol, so benchmark comparisons should account for the intervening progress.
Devstral 2 (123B) is open weight, while GPT-6 Sol is proprietary.
Direct benchmark comparisons are unavailable — Devstral 2 (123B) and GPT-6 Sol don't publish scores on any of the same benchmarks.