Noometry

Model comparison

Claude Opus 5.5 vs Tulu 3 (Tülu 3) 70B

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 33.0 on the Noometry Index.

Last verified . 13 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

Tulu 3 (Tülu 3) 70B Allen Institute for AI (Ai2)

33.0

Rank #251 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Claude Opus 5.5 scores higher in 8 categories and Tulu 3 (Tülu 3) 70B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Opus 5.5 leads 91.8 to 14.2.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Opus 5.5 and 4.4% for Tulu 3 (Tülu 3) 70B.
  • Tulu 3 (Tülu 3) 70B has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Tulu 3 (Tülu 3) 70B
ProviderAnthropicAllen Institute for AI (Ai2)
Noometry Index68.633.0
Released2026-09-222024-11-21
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked4414

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.9 (#3), Tulu 3 (Tülu 3) 70B: 36.0 (#214)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
LMArena Coding15471235
FrontierCode54.6%—
CursorBench57.8%—
LMArena WebDev1813—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—
ALE-Bench2,147—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#15), Tulu 3 (Tülu 3) 70B: —

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
APEX-Agents73.5%—
GDP.pdf30.6%—
Vending-Bench 29,235—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 80.2 (#3), Tulu 3 (Tülu 3) 70B: 23.9 (#169)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
LMArena Hard Prompts15351220
ARC-AGI-293.3%—
NYT Connections (extended)88.5%—
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
Epoch Capabilities Index167.33—

Math Claude Opus 5.5 leads

Claude Opus 5.5: 91.8 (#3), Tulu 3 (Tülu 3) 70B: 14.2 (#303)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
OTIS Mock AIME 2024-2025100%4.4%
LMArena Math15061242
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
ProofBench100%—
MATH Level 5—42.7%
FrontierMath Erdős2.9%—

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.4 (#10), Tulu 3 (Tülu 3) 70B: 25.0 (#264)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
GPQA Diamond90.6%46.3%
SimpleQA Verified72.2%—
LMArena Expert1547—

Multimodal Not comparable

Claude Opus 5.5: 57.8 (#1), Tulu 3 (Tülu 3) 70B: —

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
LMArena Vision1321—
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.1 (#2), Tulu 3 (Tülu 3) 70B: 39.9 (#222)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
LMArena Non-English15071236
LMArena Chinese15881249
LMArena Russian15201246
LMArena French1514—
LMArena Spanish1507—

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.0 (#3), Tulu 3 (Tülu 3) 70B: 64.8 (#227)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
LMArena Instruction Following15371233

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.1 (#19), Tulu 3 (Tülu 3) 70B: 37.1 (#222)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
LMArena Longer Query15321224

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.2 (#3), Tulu 3 (Tülu 3) 70B: 45.6 (#223)

BenchmarkClaude Opus 5.5Tulu 3 (Tülu 3) 70B
LMArena Text15151256
LMArena Creative Writing15331231
LMArena Multi-Turn14991252
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than Tulu 3 (Tülu 3) 70B?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 33.0 on the Noometry Index.

Is Claude Opus 5.5 or Tulu 3 (Tülu 3) 70B better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 36.0 in the Noometry coding category.

How many benchmarks do Claude Opus 5.5 and Tulu 3 (Tülu 3) 70B share?

13 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Tulu 3 (Tülu 3) 70B has 14.

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