Model comparison

GPT-5.6 Sol vs Mistral

GPT-5.6 Sol is the stronger model overall, scoring 64.4 to 29.4 on the Noometry Index.

Last verified . 17 shared benchmarks.

GPT-5.6 Sol OpenAI

64.4

Rank #6 Confirmed

Mistral Mistral AI

29.4

Rank #297 Confirmed

Summary

  • They share 17 benchmarks with published results for both. GPT-5.6 Sol scores higher in 8 categories and Mistral in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-5.6 Sol leads 85.5 to 20.5.

Side by side

GPT-5.6 Sol and Mistral specifications
GPT-5.6 SolMistral
ProviderOpenAIMistral AI
Noometry Index64.429.4
Released2026-07-09—
WeightsProprietaryProprietary
Context window1.05M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked6422

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Category by category

Coding GPT-5.6 Sol leads

GPT-5.6 Sol: 61.1 (#7), Mistral: 33.2 (#249)

Coding benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Coding14931162
DeepSWE72.7%—
FrontierCode47.5%—
CursorBench41.7%—
LMArena WebDev1619—
FrontierSWE32.2%—
SciCode57.1%—
WeirdML89.4%—
MirrorCode20%—
ALE-Bench2,177—

Agentic & Tool Use Not comparable

GPT-5.6 Sol: 50.2 (#7), Mistral: —

Agentic & Tool Use benchmarks
BenchmarkGPT-5.6 SolMistral
APEX-Agents51.4%—
OSWorld 2.027.3%—
τ²-bench Banking46.9%—
PostTrainBench36.2%—
BALROG60%—
GBAEval52.6%—
GDP.pdf30.7%—
LMArena Search1257—
Vending-Bench 29,619—

Reasoning GPT-5.6 Sol leads

GPT-5.6 Sol: 74.7 (#6), Mistral: 21.3 (#199)

Reasoning benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Hard Prompts14811149
ARC-AGI-292.5%—
SimpleBench71.7%—
Kagi LLM Benchmark67%—
NYT Connections (extended)93.8%—
ARC-AGI-197.5%—
CritPt32.3%—
Chess Puzzles64%—
EnigmaEval37.1%—
EBR-Bench44.8%—
Mystery Game Puzzles58%—
DTBench96%—
LMCA59.2%—
Surface Evolver Bench93.1%—
Bench to the Future 30.14—
Epoch Capabilities Index161.99—

Math GPT-5.6 Sol leads

GPT-5.6 Sol: 85.5 (#7), Mistral: 20.5 (#275)

Math benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Math14721180
FrontierMath (Tiers 1-3)89.1%—
FrontierMath Tier 482.9%—
OTIS Mock AIME 2024-2025100%—
ProofBench83%—
Omni-MATH—7.2%
FrontierMath Erdős0%—

Knowledge GPT-5.6 Sol leads

GPT-5.6 Sol: 64.3 (#16), Mistral: 16.3 (#283)

Knowledge benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Expert15171125
GPQA Diamond93.5%—
SimpleQA Verified69.7%—
MMLU-Pro—27.7%
Vectara Hallucination Rate12.4%—
GPQA (HELM)—30.3%

Multimodal Not comparable

GPT-5.6 Sol: 48.9 (#8), Mistral: —

Multimodal benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Vision1281—
Blueprint-Bench 233.6%—
Furniture Assembly56.7%—
LMArena Document1483—

Multilingual GPT-5.6 Sol leads

GPT-5.6 Sol: 55.4 (#32), Mistral: 33.0 (#249)

Multilingual benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Non-English14501129
LMArena Chinese15231109
LMArena French14751179
LMArena German14761155
LMArena Japanese14751012
LMArena Korean14341032
LMArena Russian14661168
LMArena Spanish14491143

Instruction Following GPT-5.6 Sol leads

GPT-5.6 Sol: 77.8 (#16), Mistral: 52.9 (#283)

Instruction Following benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Instruction Following14801152
IFEval—56.8%

Long Context GPT-5.6 Sol leads

GPT-5.6 Sol: 45.3 (#42), Mistral: 35.0 (#240)

Long Context benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Longer Query14791154

Writing & Preference GPT-5.6 Sol leads

GPT-5.6 Sol: 73.5 (#12), Mistral: 37.2 (#255)

Writing & Preference benchmarks
BenchmarkGPT-5.6 SolMistral
LMArena Text14561165
LMArena Creative Writing14501158
LMArena Multi-Turn14561147
EQ-Bench Creative Writing1972—
WildBench—66%
EQ-Bench 41250—

Frequently asked questions

Is GPT-5.6 Sol better than Mistral?

GPT-5.6 Sol is the stronger model overall, scoring 64.4 to 29.4 on the Noometry Index.

Is GPT-5.6 Sol or Mistral better for coding?

GPT-5.6 Sol scores higher on coding benchmarks: 61.1 versus 33.2 in the Noometry coding category.

How many benchmarks do GPT-5.6 Sol and Mistral share?

17 benchmarks have published results for both models. GPT-5.6 Sol has 64 scored results on Noometry and Mistral has 22.

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