Devstral 2 (123B) vs GPT-4o mini
Mistral Devstral 2 (123B) | OpenAI GPT-4o mini | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Dec 9 2025 | Jul 18 2024 |
| Access | Open Weight | Proprietary |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 2% |
| Timeline | ||
| Release gap | GPT-4o mini shipped 509 days before Devstral 2 (123B) | |
Which is better: Devstral 2 (123B) or GPT-4o mini?
Devstral 2 (123B) and GPT-4o mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4o mini shipped 509 days before Devstral 2 (123B), so benchmark comparisons should account for the intervening progress.
Devstral 2 (123B) is open weight, while GPT-4o mini is proprietary.
Direct benchmark comparisons are unavailable — Devstral 2 (123B) and GPT-4o mini don't publish scores on any of the same benchmarks.
Frequently asked questions
Devstral 2 (123B) was released by Mistral on Dec 9 2025.
GPT-4o mini was released by OpenAI on Jul 18 2024.
Devstral 2 (123B) is an open weight model released by Mistral. GPT-4o mini is a proprietary model released by OpenAI.
Other comparisons
Devstral 2 (123B) vs Claude Sonnet 5GPT-4o mini vs Claude Sonnet 5Devstral 2 (123B) vs Gemini OmniGPT-4o mini vs Gemini OmniDevstral 2 (123B) vs Muse Spark 1.1GPT-4o mini vs Muse Spark 1.1Devstral 2 (123B) vs Grok 4.5GPT-4o mini vs Grok 4.5Devstral 2 (123B) vs DeepSeek-V4-ProGPT-4o mini vs DeepSeek-V4-ProDevstral 2 (123B) vs Kimi K2.7 CodeGPT-4o mini vs Kimi K2.7 Code