Compare / head-to-head
Devstral 2vs
GPT-6.1 Sol
GPT-6.1 Sol leads 1 of 1 shared benchmark. Devstral 2 is 5x cheaper per token. GPT-6.1 Sol has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 1
GPT-6.1 Sol leads
Cheaper per token
Devstral 2
5x cheaper, input + output
Larger context
GPT-6.1 Sol
1.1M tokens
Providers
2 providers
Mistral AI · OpenAI
Devstral 2
Mistral AI · released 2025-12-09
text
GPT-6.1 Sol
OpenAI · released 2026-09-29
textvision
Quality
Benchmark matrix
1 shared · 3 only Devstral 2 · 23 only GPT-6.1 Sol| Benchmark | Devstral 2 | GPT-6.1 Sol | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 1 | ||||
| LMArena WebDev (LMArena) | 1196.1 ↗ | 1757.8 ↗ | -561.7 | GPT-6.1 Sol |
| Only Devstral 2 reports · 3 | ||||
| SWE-bench Verified | 72.2% ↗ | not reported | — | — |
| SWE-bench Multilingual | 61.3% ↗ | not reported | — | — |
| Terminal Bench 2 | 32.6% ↗ | not reported | — | — |
| Only GPT-6.1 Sol reports · 23 | ||||
| GPQA Diamond | not reported | 95.4% ↗epoch run | — | — |
| LMArena Elo | not reported | 1483.2 ↗ | — | — |
| APEX-Agents (Mercor) | not reported | 60% ↗ | — | — |
| Chess Puzzles (Epoch AI run) | not reported | 61% ↗epoch run | — | — |
| EBR-bench (Epoch AI run) | not reported | 54.3% ↗epoch run | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | not reported | 100% ↗epoch run | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | not reported | 93.7% ↗epoch run | — | — |
| Furniture Assembly (Epoch AI run) | not reported | 80% ↗epoch run | — | — |
| LiveBench Agentic Coding (LiveBench) | not reported | 56.8% ↗ | — | — |
| LiveBench Coding (LiveBench) | not reported | 80.7% ↗ | — | — |
| LiveBench Data Analysis (LiveBench) | not reported | 82.7% ↗ | — | — |
| LiveBench Instruction Following (LiveBench) | not reported | 74.2% ↗ | — | — |
| LiveBench Language (LiveBench) | not reported | 90.1% ↗ | — | — |
| LiveBench Mathematics (LiveBench) | not reported | 96.8% ↗ | — | — |
| LiveBench Reasoning (LiveBench) | not reported | 92.6% ↗ | — | — |
| LMArena Agent (LMArena) | not reported | 0.1123 ↗ | — | — |
| LMArena Vision (LMArena) | not reported | 1290.6 ↗ | — | — |
| Mystery Game Puzzles (Epoch AI run) | not reported | 80% ↗epoch run | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | not reported | 100% ↗epoch run | — | — |
| SAGE (Vals AI) | not reported | 46.5% ↗ | — | — |
| SimpleBench (SimpleBench) | not reported | 82.9% ↗ | — | — |
| SimpleQA Verified | not reported | 73.9% ↗epoch run | — | — |
| Terminal-Bench 4.0 (Vals AI) | not reported | 55.1% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Devstral 2 minus GPT-6.1 Sol in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Devstral 2 | GPT-6.1 Sol | Edge |
|---|---|---|---|
| Context window | 256K tokens | 1.1M tokens | GPT-6.1 Sol |
| Max output | — | 128K tokens | — |
| Input price / 1M | $0.4 ↗ | $2 ↗ | Devstral 2 |
| Output price / 1M | $2 ↗ | $10 ↗ | Devstral 2 |
| Cached input / 1M | — | $0.1 ↗ | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $2.4 | $12 | Devstral 2 |
| Modalities | text | text · vision | GPT-6.1 Sol |
| Released | 2025-12-09 | 2026-09-29 | — |
| Cited benchmark scores | 4 | 24 | — |
Reliability
Provider status
Live from /statusMore matchups
Devstral 2 vs …
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GPT-6.1 Sol vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Devstral 2 and GPT-6.1 Sol on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.