Devstral Small 2 vs GPT-5
Wins 0 of 7 areas
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Wins 7 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts · Long documents · Following instructions
GPT-5 is the stronger all-rounder.
Scores updated · 21 tests both models report · How we compare
Where each one wins
Tests won in each of the seven areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software04GPT-54 of 5 tests · 1 tie
- ReasoningHard problems that need careful thinking03GPT-53 of 3 tests
- AgentsCarrying out multi-step tasks on its own02GPT-52 of 2 tests
- FactsGetting facts right instead of making them up02GPT-52 of 2 tests
- Images and chartsUnderstanding pictures, charts and video01GPT-51 of 1 test
- Long documentsFinding answers in very long texts01GPT-51 of 1 test
- Following instructionsDoing exactly what it is asked01GPT-51 of 1 test
Images and charts, long documents and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where GPT-5 pulls ahead
- Reasons across sets of long documentsAA-LCR+50.2points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+41.9points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+32.2points ahead
Where Devstral Small 2 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 21 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5
- Terminal-Bench HardGPT-5 by 15.916.732.6+15.9
- SciCodeGPT-5 by 10.532.442.9+10.5
- SWE-bench VerifiedGPT-5 by 6.96874.9+6.9
- Terminal-Bench 2.1GPT-5 by 5.629.635.2+5.6
- SWE-bench Multilingualtie55.755.3tie
AgentsGPT-5
- GDPValGPT-5 by 19.41.621+19.4
- τ-Bench V3 · BankingGPT-5 by 11.410.722.1+11.4
ReasoningGPT-5
- GPQA DiamondGPT-5 by 32.253.285.4+32.2
- Humanity's Last ExamGPT-5 by 253.528.5+25
- CritPtGPT-5 by 5.705.7+5.7
FactsGPT-5
- AA-Omniscience · AccuracyGPT-5 by 24.515.840.3+24.5
- AA-Omniscience · Non-hallucinationGPT-5 by 5.112.717.8+5.1
Other results6 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- τ²-Bench Telecom (AA run)GPT-5 by 61.423.484.8+61.4
- AA-OmniscienceGPT-5 by 49-57.7-8.7+49
- AA Agentic IndexGPT-5 by 21.74.826.5+21.7
- AA IntelligenceGPT-5 by 15.57.523+15.5
- Terminal-Bench 2.0GPT-5 by 12.722.535.2+12.7
- Artificial Analysis Coding IndexGPT-5 by 8.529.337.8+8.5
Questions people ask
Which is better, Devstral Small 2 or GPT-5?
GPT-5 wins all seven areas where both have results: coding, agents, reasoning, facts, images and charts, long documents and following instructions. Devstral Small 2 wins none.
Which is better for coding?
GPT-5. It wins 4 of the 5 coding tests both models report; Devstral Small 2 wins none, and 1 is a tie.
How do you compare the two?
We use the 21 benchmark tests both models have published scores on. The verdict counts the 15 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 6 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.