Noometry

Model comparison

Claude Sonnet 5.5 vs Magistral Medium

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 35.2 on the Noometry Index.

Last verified . 14 shared benchmarks.

Claude Sonnet 5.5 Anthropic

61.9

Rank #10 Confirmed

Magistral Medium Mistral AI

35.2

Rank #227 Confirmed

Summary

  • They share 14 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 8 categories and Magistral Medium in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 35.1.
  • The biggest single-benchmark swing is CritPt: 31.4% for Claude Sonnet 5.5 and 0.3% for Magistral Medium.
  • Magistral Medium is cheaper at $2 / $5 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
  • Claude Sonnet 5.5 accepts more context: 1M tokens versus 262K.
  • Magistral Medium has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5Magistral Medium
ProviderAnthropicMistral AI
Noometry Index61.935.2
Released2026-09-282025-03-17
WeightsProprietaryOpen
Context window1M262K
Max output128K16K
Input $ / M tokens$2$2
Output $ / M tokens$10$5
Results tracked3222

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 67.3 (#6), Magistral Medium: 39.1 (#161)

BenchmarkClaude Sonnet 5.5Magistral Medium
SciCode61%39.2%
LMArena Coding15131319
FrontierCode52.1%—
CursorBench55.5%—
LMArena WebDev1774—
FrontierSWE61.9%—
ALE-Bench1,819—

Agentic & Tool Use Not comparable

Claude Sonnet 5.5: 45.0 (#16), Magistral Medium: —

BenchmarkClaude Sonnet 5.5Magistral Medium
APEX-Agents75.5%—

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 54.0 (#28), Magistral Medium: 8.6 (#348)

BenchmarkClaude Sonnet 5.5Magistral Medium
CritPt31.4%0.3%
LMArena Hard Prompts14951267
ARC-AGI-2—0%
Kagi LLM Benchmark—16.2%
NYT Connections (extended)80.5%—
ARC-AGI-1—6.1%
Mystery Game Puzzles65%—
Epoch Capabilities Index165.03—

Math Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 87.9 (#6), Magistral Medium: 35.1 (#189)

BenchmarkClaude Sonnet 5.5Magistral Medium
LMArena Math15101250
FrontierMath (Tiers 1-3)88.8%—
FrontierMath Tier 480.5%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős2.9%—

Knowledge Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#12), Magistral Medium: 33.5 (#202)

BenchmarkClaude Sonnet 5.5Magistral Medium
LMArena Expert15401223
GPQA Diamond95.6%—
SimpleQA Verified46.5%—

Multimodal Not comparable

Claude Sonnet 5.5: 51.5 (#6), Magistral Medium: —

BenchmarkClaude Sonnet 5.5Magistral Medium
LMArena Vision1289—
Furniture Assembly75%—

Multilingual Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 55.3 (#30), Magistral Medium: 39.6 (#224)

BenchmarkClaude Sonnet 5.5Magistral Medium
LMArena Non-English14521232
LMArena Chinese15221227
LMArena Russian14511224
LMArena French—1267
LMArena German—1248
LMArena Japanese—1175
LMArena Korean—1125
LMArena Spanish—1271

Instruction Following Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 78.3 (#11), Magistral Medium: 66.0 (#211)

BenchmarkClaude Sonnet 5.5Magistral Medium
LMArena Instruction Following14951254

Long Context Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 45.9 (#28), Magistral Medium: 39.3 (#183)

BenchmarkClaude Sonnet 5.5Magistral Medium
LMArena Longer Query14981295

Writing & Preference Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#40), Magistral Medium: 46.3 (#219)

BenchmarkClaude Sonnet 5.5Magistral Medium
LMArena Text14711255
LMArena Creative Writing14651245
LMArena Multi-Turn14741275

Frequently asked questions

Is Claude Sonnet 5.5 better than Magistral Medium?

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 35.2 on the Noometry Index.

Which is cheaper, Claude Sonnet 5.5 or Magistral Medium?

Magistral Medium is cheaper. It lists at $2 per million input tokens and $5 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.

Is Claude Sonnet 5.5 or Magistral Medium better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 39.1 in the Noometry coding category.

Which has the bigger context window?

Claude Sonnet 5.5 does, with 1M tokens against 262K.

How many benchmarks do Claude Sonnet 5.5 and Magistral Medium share?

14 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Magistral Medium has 22.

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