Gemini 3.1 Pro vs Mistral Medium 3.1 (Non-Reasoning)
Wins 7 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts · Long documents · Following instructions
Wins 0 of 7 areas
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Gemini 3.1 Pro is the stronger all-rounder.Mistral Medium 3.1 (Non-Reasoning) is cheaper.
Scores updated · 24 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 software30Gemini 3.1 Pro3 of 3 tests
- AgentsCarrying out multi-step tasks on its own30Gemini 3.1 Pro3 of 3 tests
- ReasoningHard problems that need careful thinking30Gemini 3.1 Pro3 of 3 tests
- FactsGetting facts right instead of making them up30Gemini 3.1 Pro3 of 3 tests
- Images and chartsUnderstanding pictures, charts and video20Gemini 3.1 Pro2 of 2 tests
- Long documentsFinding answers in very long texts10Gemini 3.1 Pro1 of 1 test
- Following instructionsDoing exactly what it is asked10Gemini 3.1 Pro1 of 1 test
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.
Mistral Medium 3.1 (Non-Reasoning) costs 83% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Gemini 3.1 Pro pulls ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+59.9points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+43.2points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+42.3points ahead
Where Mistral Medium 3.1 (Non-Reasoning) pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 24 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 3.1 Pro
- Terminal-Bench 2.1Gemini 3.1 Pro by 59.973.813.9+59.9
- Terminal-Bench HardGemini 3.1 Pro by 43.253.810.6+43.2
- SciCodeGemini 3.1 Pro by 26.358.732.4+26.3
AgentsGemini 3.1 Pro
- GDPValGemini 3.1 Pro by 14.714.70+14.7
- τ-Bench V3 · BankingGemini 3.1 Pro by 13.221.48.2+13.2
- Terminal-Bench 4.0Gemini 3.1 Pro by 440+4
ReasoningGemini 3.1 Pro
- Humanity's Last ExamGemini 3.1 Pro by 42.3474.7+42.3
- GPQA DiamondGemini 3.1 Pro by 35.394.158.8+35.3
- CritPtGemini 3.1 Pro by 17.717.70+17.7
FactsGemini 3.1 Pro
- AA-Omniscience · AccuracyGemini 3.1 Pro by 34.154.920.8+34.1
- AA-Omniscience · Non-hallucinationGemini 3.1 Pro by 33.749.115.4+33.7
- Vectara HHEM hallucination ratelower is betterGemini 3.1 Pro by 12.310.422.7+12.3
Images and chartsGemini 3.1 Pro
- MMMU-ProGemini 3.1 Pro by 28.282.454.2+28.2
- LMArena · VisionGemini 3.1 Pro by 124 rating points12961172+124 rating
Following instructionsGemini 3.1 Pro
- IFBenchGemini 3.1 Pro by 37.377.139.8+37.3
Other results8 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.
- AA-OmniscienceGemini 3.1 Pro by 78.231.9-46.3+78.2
- τ²-Bench Telecom (AA run)Gemini 3.1 Pro by 5595.640.6+55
- Artificial Analysis Coding IndexGemini 3.1 Pro by 48.368.820.5+48.3
- AA IntelligenceGemini 3.1 Pro by 20.529.79.2+20.5
- vectara_factual_consistencyGemini 3.1 Pro by 12.389.677.3+12.3
- AA Agentic IndexGemini 3.1 Pro by 7.210.33.1+7.2
- vectara_avg_summary_lengthMistral Medium 3.1 (Non-Reasoning) by 35.2 rating points107.7142.9+35.2 rating
- vectara_answer_ratetie99.499.7tie
Questions people ask
Which is better, Gemini 3.1 Pro or Mistral Medium 3.1 (Non-Reasoning)?
Gemini 3.1 Pro wins all seven areas where both have results: coding, agents, reasoning, facts, images and charts, long documents and following instructions. Mistral Medium 3.1 (Non-Reasoning) wins none, but costs 83% less.
Which is better for coding?
Gemini 3.1 Pro. It wins 3 of the 3 coding tests both models report; Mistral Medium 3.1 (Non-Reasoning) wins none.
Which is cheaper?
Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; Mistral Medium 3.1 (Non-Reasoning) costs $0.40 and $2.00. That makes Mistral Medium 3.1 (Non-Reasoning) about 83% cheaper for the same work.
How do you compare the two?
We use the 24 benchmark tests both models have published scores on. The verdict counts the 16 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 8 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.