Noometry

Model comparison

GPT-6 Astra vs Mistral Large

GPT-6 Astra is the stronger model overall, scoring 70.8 to 31.9 on the Noometry Index. Mistral Large costs 6.7× less per token, which makes it the better buy when GPT-6 Astra's lead doesn't matter for your workload.

Last verified . 27 shared benchmarks.

GPT-6 Astra OpenAI

70.8

Rank #1 Confirmed

Mistral Large Mistral AI

31.9

Rank #263 Confirmed

Summary

  • They share 27 benchmarks with published results for both. GPT-6 Astra scores higher in 9 categories and Mistral Large in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where GPT-6 Astra leads 93.5 to 18.2.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for GPT-6 Astra and 8.5% for Mistral Large.
  • Mistral Large is cheaper at $2 / $6 per million input/output tokens, against $10 / $50 for GPT-6 Astra.
  • GPT-6 Astra accepts more context: 1.05M tokens versus 131K.
  • Mistral Large has downloadable open weights; the other is API-only.

Side by side

GPT-6 AstraMistral Large
ProviderOpenAIMistral AI
Noometry Index70.831.9
Released2026-09-032024-02-26
WeightsProprietaryOpen
Context window1.05M131K
Max output128K16K
Input $ / M tokens$10$2
Output $ / M tokens$50$6
Results tracked5651

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Category by category

Coding GPT-6 Astra leads

GPT-6 Astra: 73.7 (#2), Mistral Large: 34.3 (#240)

BenchmarkGPT-6 AstraMistral Large
SciCode56.5%36.2%
LMArena Coding14871277
ALE-Bench2,951264.7
DeepSWE74.1%—
FrontierCode53.3%—
LMArena WebDev1786—
FrontierSWE65.5%—
GSO79.4%—
WeirdML93.6%—
BigCodeBench Instruct—30%
LiveBench Coding—47.1%
MirrorCode46.7%—
BigCodeBench Complete—38.3%
HumanEval+—62.2%
MBPP+—59.5%

Agentic & Tool Use GPT-6 Astra leads

GPT-6 Astra: 52.9 (#3), Mistral Large: 28.6 (#89)

BenchmarkGPT-6 AstraMistral Large
APEX-Agents64.7%—
Berkeley Function Calling Leaderboard—38.4%
Remote Labor Index20.8%—
BALROG68.3%—
GDP.pdf34.2%—
Vending-Bench 215,515—

Reasoning GPT-6 Astra leads

GPT-6 Astra: 85.1 (#1), Mistral Large: 15.8 (#310)

BenchmarkGPT-6 AstraMistral Large
CritPt31.7%0%
LMArena Hard Prompts14621257
DTBench97.3%65.1%
LMCA64.4%16.7%
Epoch Capabilities Index166.45128.52
ARC-AGI-295%—
SimpleBench—22.5%
NYT Connections (extended)98.1%—
ARC-AGI-198.5%—
Chess Puzzles72%—
EBR-Bench76.2%—
LiveBench Reasoning—43.5%
Mystery Game Puzzles84%—
LiveBench Data Analysis—50.1%
Bench to the Future 30.14—
ForecastBench—57.1
LiveBench—48.4%

Math GPT-6 Astra leads

GPT-6 Astra: 93.5 (#2), Mistral Large: 18.2 (#291)

BenchmarkGPT-6 AstraMistral Large
OTIS Mock AIME 2024-2025100%8.5%
LMArena Math14651262
FrontierMath (Tiers 1-3)93.7%—
FrontierMath Tier 497.6%—
ProofBench99%—
Omni-MATH—28.1%
LiveBench Math—42.5%
MATH Level 5—50.3%
FrontierMath (Feb 2025 set)—0.3%
FrontierMath Erdős2.9%—

Knowledge GPT-6 Astra leads

GPT-6 Astra: 75.3 (#1), Mistral Large: 30.1 (#230)

BenchmarkGPT-6 AstraMistral Large
GPQA Diamond95.8%51.3%
Vectara Hallucination Rate8.7%4.5%
LMArena Expert14831232
Humanity's Last Exam54.8%—
SimpleQA Verified75.6%—
MMLU-Pro—59.9%
Confabulations—21.4%
GPQA (HELM)—43.5%
MMLU—80%

Multimodal Not comparable

GPT-6 Astra: 55.0 (#3), Mistral Large: —

BenchmarkGPT-6 AstraMistral Large
LMArena Vision1281—
Blueprint-Bench 249.7%—
Furniture Assembly80%—
LMArena Document1468—

Multilingual GPT-6 Astra leads

GPT-6 Astra: 53.7 (#61), Mistral Large: 40.0 (#219)

BenchmarkGPT-6 AstraMistral Large
LMArena Non-English14301237
LMArena Chinese14841240
LMArena French14561325
LMArena German14401254
LMArena Japanese13791188
LMArena Korean14261202
LMArena Russian14361257
LMArena Spanish14071268

Instruction Following GPT-6 Astra leads

GPT-6 Astra: 76.3 (#44), Mistral Large: 67.9 (#191)

BenchmarkGPT-6 AstraMistral Large
LMArena Instruction Following14501249
LiveBench Instruction Following—67.9%
IFEval—87.7%

Long Context GPT-6 Astra leads

GPT-6 Astra: 44.5 (#62), Mistral Large: 38.3 (#199)

BenchmarkGPT-6 AstraMistral Large
LMArena Longer Query14561261

Writing & Preference GPT-6 Astra leads

GPT-6 Astra: 75.3 (#7), Mistral Large: 40.7 (#242)

BenchmarkGPT-6 AstraMistral Large
LMArena Text14411266
LMArena Creative Writing14181243
EQ-Bench Creative Writing2173985
LMArena Multi-Turn14481260
Short-Story Creative Writing—69%
WildBench—80.1%
LiveBench Language—39.4%

Frequently asked questions

Is GPT-6 Astra better than Mistral Large?

GPT-6 Astra is the stronger model overall, scoring 70.8 to 31.9 on the Noometry Index. Mistral Large costs 6.7× less per token, which makes it the better buy when GPT-6 Astra's lead doesn't matter for your workload.

Which is cheaper, GPT-6 Astra or Mistral Large?

Mistral Large is cheaper. It lists at $2 per million input tokens and $6 per million output tokens; GPT-6 Astra lists at $10 and $50.

Is GPT-6 Astra or Mistral Large better for coding?

GPT-6 Astra scores higher on coding benchmarks: 73.7 versus 34.3 in the Noometry coding category.

Which has the bigger context window?

GPT-6 Astra does, with 1.05M tokens against 131K.

How many benchmarks do GPT-6 Astra and Mistral Large share?

27 benchmarks have published results for both models. GPT-6 Astra has 56 scored results on Noometry and Mistral Large has 51.

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