Noometry

Model comparison

Claude Sonnet 5 vs Pixtral 12B

Claude Sonnet 5 has enough public results to be ranked (#26); Pixtral 12B does not yet, so treat this comparison as directional.

Last verified . 1 shared benchmarks.

Claude Sonnet 5 Anthropic

54.5

Rank #26 Confirmed

Pixtral 12B Mistral AI

30.8

Unranked Sparse

Summary

  • They share 1 benchmark with published results for both. Claude Sonnet 5 scores higher in 1 category and Pixtral 12B in 0 categories; one gap is clear of the uncertainty.
  • The widest gap is in multimodal, where Claude Sonnet 5 leads 42.4 to 23.4.
  • Pixtral 12B is cheaper at $0.15 / $0.15 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.
  • Claude Sonnet 5 accepts more context: 1M tokens versus 128K.
  • Pixtral 12B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5Pixtral 12B
ProviderAnthropicMistral AI
Noometry Index54.530.8
Released2026-06-292024-09-01
WeightsProprietaryOpen
Context window1M128K
Max output128K128K
Input $ / M tokens$2$0.15
Output $ / M tokens$10$0.15
Results tracked512

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Not comparable

Claude Sonnet 5: 55.5 (#20), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
DeepSWE53.8%—
FrontierCode42.7%—
CursorBench34.1%—
LMArena WebDev1540—
SciCode53.6%—
GSO37.3%—
WeirdML68.8%—
LMArena Coding1483—
ALE-Bench1,463—

Agentic & Tool Use Not comparable

Claude Sonnet 5: 42.7 (#16), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
APEX-Agents54.5%—
GBAEval65.3%—
LMArena Search1194—
Vending-Bench 26,378—

Reasoning Not comparable

Claude Sonnet 5: 48.2 (#37), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
SimpleBench60.6%—
NYT Connections (extended)75.1%—
CritPt16.9%—
Chess Puzzles35%—
LMArena Hard Prompts1461—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Surface Evolver Bench60%—
Bench to the Future 30.14—
Epoch Capabilities Index156.34—
ForecastBench61.1—

Math Not comparable

Claude Sonnet 5: 66.1 (#21), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202594.7%—
ProofBench77%—
LMArena Math1467—

Knowledge Not comparable

Claude Sonnet 5: 55.7 (#42), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
GPQA Diamond90.5%—
SimpleQA Verified33.7%—
LMArena Expert1491—

Multimodal Claude Sonnet 5 leads

Claude Sonnet 5: 42.4 (#26), Pixtral 12B: 23.4 (#122)

BenchmarkClaude Sonnet 5Pixtral 12B
LMArena Vision12751008
GeoBench—37%
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Not comparable

Claude Sonnet 5: 54.0 (#55), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
LMArena Non-English1431—
LMArena Chinese1475—
LMArena French1457—
LMArena German1448—
LMArena Japanese1422—
LMArena Korean1411—
LMArena Russian1452—
LMArena Spanish1436—

Instruction Following Not comparable

Claude Sonnet 5: 76.6 (#39), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
LMArena Instruction Following1453—

Long Context Not comparable

Claude Sonnet 5: 44.8 (#53), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
LMArena Longer Query1464—

Writing & Preference Not comparable

Claude Sonnet 5: 69.4 (#24), Pixtral 12B: —

BenchmarkClaude Sonnet 5Pixtral 12B
LMArena Text1443—
LMArena Creative Writing1416—
EQ-Bench Creative Writing1794—
EQ-Bench 41236—
LMArena Multi-Turn1454—

Frequently asked questions

Is Claude Sonnet 5 better than Pixtral 12B?

Claude Sonnet 5 has enough public results to be ranked (#26); Pixtral 12B does not yet, so treat this comparison as directional.

Which is cheaper, Claude Sonnet 5 or Pixtral 12B?

Pixtral 12B is cheaper. It lists at $0.15 per million input tokens and $0.15 per million output tokens; Claude Sonnet 5 lists at $2 and $10.

Which has the bigger context window?

Claude Sonnet 5 does, with 1M tokens against 128K.

How many benchmarks do Claude Sonnet 5 and Pixtral 12B share?

1 benchmark has published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Pixtral 12B has 2.

Related comparisons

Go deeper