Model comparison

Claude Sonnet 5.5 vs DeepSeek Coder 33B

Claude Sonnet 5.5 has enough public results to be ranked (#10); DeepSeek Coder 33B does not yet, so treat this comparison as directional.

Last verified . 1 shared benchmarks.

Claude Sonnet 5.5 Anthropic

61.9

Rank #10 Confirmed

DeepSeek Coder 33B DeepSeek

38.9

Unranked Sparse

Summary

  • They share 1 benchmark with published results for both. Claude Sonnet 5.5 scores higher in 1 category and DeepSeek Coder 33B in 0 categories; one gap is clear of the uncertainty.
  • The widest gap is in coding, where Claude Sonnet 5.5 leads 67.3 to 38.0.
  • DeepSeek Coder 33B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5 and DeepSeek Coder 33B specifications
Claude Sonnet 5.5DeepSeek Coder 33B
ProviderAnthropicDeepSeek
Noometry Index61.938.9
Released2026-09-282023-11-02
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked329

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 67.3 (#6), DeepSeek Coder 33B: 38.0 (#184)

Coding benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
FrontierCode52.1%—
CursorBench55.5%—
LMArena WebDev1774—
FrontierSWE61.9%—
SciCode61%—
BigCodeBench Instruct—42%
LMArena Coding1513—
BigCodeBench Complete—51.1%
ALE-Bench1,819—
HumanEval+—75%
MBPP+—70.1%

Agentic & Tool Use Not comparable

Claude Sonnet 5.5: 45.0 (#16), DeepSeek Coder 33B: —

Agentic & Tool Use benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
APEX-Agents75.5%—

Reasoning Not comparable

Claude Sonnet 5.5: 54.0 (#28), DeepSeek Coder 33B: —

Reasoning benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
Epoch Capabilities Index165.0396.32
NYT Connections (extended)80.5%—
CritPt31.4%—
LMArena Hard Prompts1495—
Mystery Game Puzzles65%—
WinoGrande—62%

Math Not comparable

Claude Sonnet 5.5: 87.9 (#6), DeepSeek Coder 33B: —

Math benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
FrontierMath (Tiers 1-3)88.8%—
FrontierMath Tier 480.5%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
LMArena Math1510—
FrontierMath Erdős2.9%—
GSM8K—35.4%

Knowledge Not comparable

Claude Sonnet 5.5: 66.0 (#12), DeepSeek Coder 33B: —

Knowledge benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
GPQA Diamond95.6%—
SimpleQA Verified46.5%—
LMArena Expert1540—
ARC (AI2) Challenge—42.2%
MMLU—39.4%

Multimodal Not comparable

Claude Sonnet 5.5: 51.5 (#6), DeepSeek Coder 33B: —

Multimodal benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
LMArena Vision1289—
Furniture Assembly75%—

Multilingual Not comparable

Claude Sonnet 5.5: 55.3 (#30), DeepSeek Coder 33B: —

Multilingual benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
LMArena Non-English1452—
LMArena Chinese1522—
LMArena Russian1451—

Instruction Following Not comparable

Claude Sonnet 5.5: 78.3 (#11), DeepSeek Coder 33B: —

Instruction Following benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
LMArena Instruction Following1495—

Long Context Not comparable

Claude Sonnet 5.5: 45.9 (#28), DeepSeek Coder 33B: —

Long Context benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
LMArena Longer Query1498—

Writing & Preference Not comparable

Claude Sonnet 5.5: 66.0 (#40), DeepSeek Coder 33B: —

Writing & Preference benchmarks
BenchmarkClaude Sonnet 5.5DeepSeek Coder 33B
LMArena Text1471—
LMArena Creative Writing1465—
LMArena Multi-Turn1474—

Frequently asked questions

Is Claude Sonnet 5.5 better than DeepSeek Coder 33B?

Claude Sonnet 5.5 has enough public results to be ranked (#10); DeepSeek Coder 33B does not yet, so treat this comparison as directional.

Is Claude Sonnet 5.5 or DeepSeek Coder 33B better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 38.0 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5.5 and DeepSeek Coder 33B share?

1 benchmark has published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and DeepSeek Coder 33B has 9.

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