Noometry

Model comparison

Claude Opus 4.5 vs Mistral 7B

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 23.0 on the Noometry Index. Mistral 7B costs 40× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.

Last verified . 21 shared benchmarks.

Claude Opus 4.5 Anthropic

50.5

Rank #47 Confirmed

Mistral 7B Mistral AI

23.0

Rank #351 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Claude Opus 4.5 scores higher in 8 categories and Mistral 7B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Claude Opus 4.5 leads 56.5 to 7.4.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 86.1% for Claude Opus 4.5 and 0.3% for Mistral 7B.
  • Mistral 7B is cheaper at $0.25 / $0.25 per million input/output tokens, against $5 / $25 for Claude Opus 4.5.
  • Claude Opus 4.5 accepts more context: 200K tokens versus 8K.
  • Mistral 7B has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4.5Mistral 7B
ProviderAnthropicMistral AI
Noometry Index50.523.0
Released2025-11-012023-09-27
WeightsProprietaryOpen
Context window200K8K
Max output64K8K
Input $ / M tokens$5$0.25
Output $ / M tokens$25$0.25
Results tracked6937

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Category by category

Coding Claude Opus 4.5 leads

Claude Opus 4.5: 54.8 (#27), Mistral 7B: 26.4 (#326)

BenchmarkClaude Opus 4.5Mistral 7B
LMArena Coding15041082
SWE-bench Verified76.7%—
SWE-bench Verified (bash only)76.8%—
LMArena WebDev1494—
SWE-bench Multilingual70.7%—
GSO26.5%—
WeirdML63.7%—
BigCodeBench Instruct—19.5%
BigCodeBench Complete—27.3%
ALE-Bench1,025—
AlgoTune1.77—
HumanEval+—36%
MBPP+—42.1%

Agentic & Tool Use Not comparable

Claude Opus 4.5: 47.3 (#12), Mistral 7B: —

BenchmarkClaude Opus 4.5Mistral 7B
Terminal-Bench63.1%—
Berkeley Function Calling Leaderboard77.5%—
GDPval45.5%—
Remote Labor Index3.8%—
τ²-bench Airline84%—
τ²-bench Banking24.7%—
τ²-bench Retail79.6%—
τ²-bench Telecom92.3%—
Cybench82%—
DeepResearch Bench54.8%—
OSWorld66.3%—
BALROG43.5%—
LMArena Search1180—
METR Time Horizons75%—
Vending-Bench 24,967—

Reasoning Claude Opus 4.5 leads

Claude Opus 4.5: 42.6 (#51), Mistral 7B: 13.1 (#336)

BenchmarkClaude Opus 4.5Mistral 7B
Chess Puzzles12%0%
LMArena Hard Prompts14761067
DTBench89.9%42.5%
Epoch Capabilities Index150.09112.21
ARC-AGI-237.6%—
SimpleBench62%—
Kagi LLM Benchmark80.2%—
NYT Connections (extended)52.5%—
ARC-AGI-180%—
EnigmaEval11.9%—
EBR-Bench14.3%—
Mystery Game Puzzles22%—
LMCA44.5%—
Adversarial NLI—47.1%
BIG-Bench Hard—56.1%
ForecastBench60.7—
HellaSwag—81%
PIQA—83%
WinoGrande—75.3%

Math Claude Opus 4.5 leads

Claude Opus 4.5: 38.6 (#132), Mistral 7B: 8.1 (#325)

BenchmarkClaude Opus 4.5Mistral 7B
OTIS Mock AIME 2024-202586.1%0.3%
LMArena Math14631085
FrontierMath (Tiers 1-3)34.4%—
FrontierMath Tier 44.9%—
ProofBench36%—
MATH Level 5—3.7%
FrontierMath (Feb 2025 set)20.7%—
FrontierMath Tier 4 (v1)4.2%—
GSM8K—54.4%

Knowledge Claude Opus 4.5 leads

Claude Opus 4.5: 56.5 (#44), Mistral 7B: 7.4 (#311)

BenchmarkClaude Opus 4.5Mistral 7B
GPQA Diamond86%15.2%
LMArena Expert14871036
Humanity's Last Exam25.2%—
SimpleQA Verified45.7%—
Vectara Hallucination Rate10.9%—
ARC (AI2) Challenge—78.6%
BoolQ—87.4%
MMLU—62.5%
OpenBookQA—79.8%
TriviaQA—75.2%

Multimodal Not comparable

Claude Opus 4.5: 31.4 (#107), Mistral 7B: —

BenchmarkClaude Opus 4.5Mistral 7B
GeoBench75%—
VPCT40%—
Furniture Assembly28.3%—
LMArena Document1462—

Multilingual Claude Opus 4.5 leads

Claude Opus 4.5: 54.3 (#47), Mistral 7B: 25.8 (#283)

BenchmarkClaude Opus 4.5Mistral 7B
LMArena Non-English14381012
LMArena Chinese14701009
LMArena French14711037
LMArena German1449987
LMArena Japanese1416878
LMArena Russian14471018
LMArena Spanish14581026
LMArena Korean1424—

Instruction Following Claude Opus 4.5 leads

Claude Opus 4.5: 77.5 (#19), Mistral 7B: 54.2 (#280)

BenchmarkClaude Opus 4.5Mistral 7B
LMArena Instruction Following14781060

Long Context Claude Opus 4.5 leads

Claude Opus 4.5: 46.5 (#22), Mistral 7B: 32.2 (#271)

BenchmarkClaude Opus 4.5Mistral 7B
LMArena Longer Query14801060
CL-bench21.1%—

Writing & Preference Claude Opus 4.5 leads

Claude Opus 4.5: 68.1 (#28), Mistral 7B: 30.7 (#286)

BenchmarkClaude Opus 4.5Mistral 7B
LMArena Text14511090
LMArena Creative Writing14451068
LMArena Multi-Turn14661062
EQ-Bench Creative Writing1687—

Frequently asked questions

Is Claude Opus 4.5 better than Mistral 7B?

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 23.0 on the Noometry Index. Mistral 7B costs 40× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4.5 or Mistral 7B?

Mistral 7B is cheaper. It lists at $0.25 per million input tokens and $0.25 per million output tokens; Claude Opus 4.5 lists at $5 and $25.

Is Claude Opus 4.5 or Mistral 7B better for coding?

Claude Opus 4.5 scores higher on coding benchmarks: 54.8 versus 26.4 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 4.5 does, with 200K tokens against 8K.

How many benchmarks do Claude Opus 4.5 and Mistral 7B share?

21 benchmarks have published results for both models. Claude Opus 4.5 has 69 scored results on Noometry and Mistral 7B has 37.

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