Claude Sonnet 4 vs Mistral Large 3
Wins 6 of 7 areas
Coding · Agents · Reasoning · Facts · Long documents · Following instructions
Wins 0 of 7 areas
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Claude Sonnet 4 is the stronger all-rounder.Mistral Large 3 is cheaper.
Scores updated · 28 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.
- ReasoningHard problems that need careful thinking30Claude Sonnet 43 of 4 tests · 1 tie
- CodingWriting and fixing software30Claude Sonnet 43 of 3 tests
- AgentsCarrying out multi-step tasks on its own20Claude Sonnet 42 of 2 tests
- FactsGetting facts right instead of making them up21Claude Sonnet 42 of 3 tests
- Long documentsFinding answers in very long texts10Claude Sonnet 41 of 1 test
- Following instructionsDoing exactly what it is asked10Claude Sonnet 41 of 1 test
- Images and chartsUnderstanding pictures, charts and video11Even1 each
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 Large 3 costs 89% 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 Claude Sonnet 4 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+56.9points ahead
- Reasons across sets of long documentsAA-LCR+34.3points ahead
- Common-sense trick questionsSimpleBench+25.1points ahead
Where Mistral Large 3 pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+2.3points ahead
Every test, side by side
All 28 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Sonnet 4
- Terminal-Bench 2.1Claude Sonnet 4 by 24.336.312+24.3
- Terminal-Bench HardClaude Sonnet 4 by 15.231.115.9+15.2
- SciCodeClaude Sonnet 4 by 3.44036.6+3.4
AgentsClaude Sonnet 4
- τ-Bench V3 · BankingClaude Sonnet 4 by 10.916.75.8+10.9
- GDPValClaude Sonnet 4 by 9.79.70+9.7
ReasoningClaude Sonnet 4
- SimpleBenchClaude Sonnet 4 by 25.145.520.4+25.1
- GPQA DiamondClaude Sonnet 4 by 9.777.768+9.7
- Humanity's Last ExamClaude Sonnet 4 by 6.510.74.2+6.5
- CritPttie0.30tie
FactsClaude Sonnet 4
- AA-Omniscience · Non-hallucinationClaude Sonnet 4 by 56.970.914+56.9
- Vectara HHEM hallucination ratelower is betterClaude Sonnet 4 by 4.210.314.5+4.2
- AA-Omniscience · AccuracyMistral Large 3 by 2.322.724.9+2.3
Images and chartsEven
- MMMU-ProClaude Sonnet 4 by 6.161.855.7+6.1
- LMArena · VisionMistral Large 3 by 31 rating points11911222+31 rating
Following instructionsClaude Sonnet 4
- IFBenchClaude Sonnet 4 by 18.554.736.2+18.5
Other results12 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)Claude Sonnet 4 by 4064.624.6+40
- AA-OmniscienceClaude Sonnet 4 by 39.80.2-39.6+39.8
- LiveCodeBenchClaude Sonnet 4 by 34.168.534.4+34.1
- Artificial Analysis Coding IndexClaude Sonnet 4 by 17.537.620.1+17.5
- AA Agentic IndexClaude Sonnet 4 by 15.217.62.4+15.2
- MMMLUClaude Sonnet 4 by 12.386.574.2+12.3
- MMLU-ReduxClaude Sonnet 4 by 11.693.682+11.6
- AA IntelligenceClaude Sonnet 4 by 9.618.99.3+9.6
- SimpleQAMistral Large 3 by 7.915.923.8+7.9
- vectara_factual_consistencyClaude Sonnet 4 by 4.289.785.5+4.2
- vectara_avg_summary_lengthClaude Sonnet 4 by 33.1 rating points145.8112.7+33.1 rating
- vectara_answer_ratetie98.698.8tie
Questions people ask
Which is better, Claude Sonnet 4 or Mistral Large 3?
Claude Sonnet 4 wins six of the seven areas where both have results: coding, agents, reasoning, facts, long documents and following instructions. Mistral Large 3 wins none, but costs 89% less. They are level on images and charts.
Which is better for coding?
Claude Sonnet 4. It wins 3 of the 3 coding tests both models report; Mistral Large 3 wins none.
Which is cheaper?
Claude Sonnet 4 costs $3.00 per million input tokens and $15.00 per million output tokens; Mistral Large 3 costs $0.50 and $1.50. That makes Mistral Large 3 about 89% cheaper for the same work.
How do you compare the two?
We use the 28 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 12 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.