Noometry

Model comparison

Claude Sonnet 4.5 vs Magistral Medium

Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 34.8 on the Noometry Index. Magistral Medium costs 2.2× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Last verified . 22 shared benchmarks.

Claude Sonnet 4.5 Anthropic

44.0

Rank #76 Confirmed

Magistral Medium Mistral AI

34.8

Rank #224 Confirmed

Summary

  • They share 22 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 7 categories and Magistral Medium in 1 category; 7 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Claude Sonnet 4.5 leads 66.7 to 46.5.
  • The biggest single-benchmark swing is ARC-AGI-1: 63.7% for Claude Sonnet 4.5 and 6.1% for Magistral Medium.
  • Magistral Medium is cheaper at $2 / $5 per million input/output tokens, against $3 / $15 for Claude Sonnet 4.5.
  • Claude Sonnet 4.5 accepts more context: 1M tokens versus 128K.
  • Magistral Medium has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 4.5Magistral Medium
ProviderAnthropicMistral AI
Noometry Index44.034.8
Released2025-09-292025-03-17
WeightsProprietaryOpen
Context window1M128K
Max output64K16K
Input $ / M tokens$3$2
Output $ / M tokens$15$5
Results tracked7322

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Category by category

Coding Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 47.8 (#54), Magistral Medium: 38.6 (#161)

BenchmarkClaude Sonnet 4.5Magistral Medium
SciCode44.7%39.2%
LMArena Coding14891319
SWE-bench Verified71.3%—
SWE-bench Verified (bash only)71.4%—
LMArena WebDev1393—
SWE-bench Multilingual67%—
GSO14.7%—
WeirdML47.7%—
ALE-Bench796.15—
AlgoTune1.52—

Agentic & Tool Use Not comparable

Claude Sonnet 4.5: 38.1 (#30), Magistral Medium: —

BenchmarkClaude Sonnet 4.5Magistral Medium
Terminal-Bench46.5%—
Berkeley Function Calling Leaderboard73.2%—
GDPval42.5%—
Remote Labor Index2.1%—
τ²-bench Airline72%—
τ²-bench Banking25.3%—
τ²-bench Retail72.4%—
τ²-bench Telecom84.9%—
Cybench60%—
DeepResearch Bench52.6%—
OSWorld62.9%—
LMArena Search1159—
METR Time Horizons67.4%—
Vending-Bench 23,839—

Reasoning Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 26.9 (#113), Magistral Medium: 8.7 (#342)

BenchmarkClaude Sonnet 4.5Magistral Medium
ARC-AGI-213.6%0%
Kagi LLM Benchmark57.9%16.2%
ARC-AGI-163.7%6.1%
CritPt1.1%0.3%
LMArena Hard Prompts14621267
SimpleBench54.3%—
NYT Connections (extended)37.3%—
Chess Puzzles12%—
EnigmaEval6%—
EBR-Bench2.4%—
Mystery Game Puzzles17%—
DTBench83.2%—
LMCA38.8%—
Epoch Capabilities Index146.84—
ForecastBench61.9—

Math Too close to call

Claude Sonnet 4.5: 31.9 (#190), Magistral Medium: 32.4 (#187)

BenchmarkClaude Sonnet 4.5Magistral Medium
LMArena Math14481249
FrontierMath (Tiers 1-3)23.9%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202577.8%—
ProofBench19%—
Omni-MATH55.3%—
MATH Level 597.7%—
FrontierMath (Feb 2025 set)15.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 48.4 (#70), Magistral Medium: 32.9 (#199)

BenchmarkClaude Sonnet 4.5Magistral Medium
LMArena Expert14831222
GPQA Diamond82.3%—
Humanity's Last Exam13.7%—
SimpleQA Verified30.7%—
MMLU-Pro86.9%—
Vectara Hallucination Rate12%—
GPQA (HELM)68.6%—

Multimodal Not comparable

Claude Sonnet 4.5: 34.1 (#84), Magistral Medium: —

BenchmarkClaude Sonnet 4.5Magistral Medium
VPCT39.8%—
LMArena Document1450—

Multilingual Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 53.6 (#65), Magistral Medium: 39.8 (#219)

BenchmarkClaude Sonnet 4.5Magistral Medium
LMArena Non-English14251232
LMArena Chinese14591225
LMArena French14591268
LMArena German14271248
LMArena Japanese13901176
LMArena Korean14031125
LMArena Russian14361224
LMArena Spanish14571269

Instruction Following Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 75.2 (#74), Magistral Medium: 66.2 (#207)

BenchmarkClaude Sonnet 4.5Magistral Medium
LMArena Instruction Following14591254
IFEval85%—

Long Context Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 45.2 (#45), Magistral Medium: 39.3 (#178)

BenchmarkClaude Sonnet 4.5Magistral Medium
LMArena Longer Query14761295

Writing & Preference Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 66.7 (#33), Magistral Medium: 46.5 (#214)

BenchmarkClaude Sonnet 4.5Magistral Medium
LMArena Text14391255
LMArena Creative Writing14421245
LMArena Multi-Turn14651275
EQ-Bench Creative Writing1678—
WildBench85.4%—

Frequently asked questions

Is Claude Sonnet 4.5 better than Magistral Medium?

Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 34.8 on the Noometry Index. Magistral Medium costs 2.2× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Which is cheaper, Claude Sonnet 4.5 or Magistral Medium?

Magistral Medium is cheaper. It lists at $2 per million input tokens and $5 per million output tokens; Claude Sonnet 4.5 lists at $3 and $15.

Is Claude Sonnet 4.5 or Magistral Medium better for coding?

Claude Sonnet 4.5 scores higher on coding benchmarks: 47.8 versus 38.6 in the Noometry coding category.

Which has the bigger context window?

Claude Sonnet 4.5 does, with 1M tokens against 128K.

How many benchmarks do Claude Sonnet 4.5 and Magistral Medium share?

22 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Magistral Medium has 22.

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