Noometry

Model comparison

Claude Haiku 4.5 vs o1-pro

Claude Haiku 4.5 is the stronger model overall, scoring 39.5 to 31.5 on the Noometry Index.

Last verified . 1 shared benchmarks.

Claude Haiku 4.5 Anthropic

39.5

Rank #165 Confirmed

o1-pro OpenAI

31.5

Rank #271 Reported

Summary

  • They share 1 benchmark with published results for both. Claude Haiku 4.5 scores higher in 1 category and o1-pro in 1 category; 2 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Claude Haiku 4.5 leads 37.7 to 29.7.
  • The biggest single-benchmark swing is ARC-AGI-1: 47.7% for Claude Haiku 4.5 and 23.3% for o1-pro.
  • Claude Haiku 4.5 is cheaper at $1 / $5 per million input/output tokens, against $150 / $600 for o1-pro.

Side by side

Claude Haiku 4.5o1-pro
ProviderAnthropicOpenAI
Noometry Index39.531.5
Released2025-10-152025-03-19
WeightsProprietaryProprietary
Context window200K200K
Max output64K100K
Input $ / M tokens$1$150
Output $ / M tokens$5$600
Results tracked533

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Category by category

Coding Not comparable

Claude Haiku 4.5: 44.0 (#78), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
SWE-bench Verified (bash only)66.6%—
LMArena WebDev1330—
SWE-bench Multilingual64.7%—
SciCode43.3%—
WeirdML45.4%—
LMArena Coding1453—
ALE-Bench653.48—

Agentic & Tool Use Not comparable

Claude Haiku 4.5: 33.6 (#52), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
Terminal-Bench35.5%—
Berkeley Function Calling Leaderboard68.7%—
DeepResearch Bench45.5%—
BALROG31.2%—
ExploitBench13.7%—
Vending-Bench 2458.89—

Reasoning o1-pro leads

Claude Haiku 4.5: 15.1 (#320), o1-pro: 20.4 (#239)

BenchmarkClaude Haiku 4.5o1-pro
ARC-AGI-147.7%23.3%
ARC-AGI-24%—
NYT Connections (extended)14.3%—
CritPt0%—
Chess Puzzles8%—
EnigmaEval—6.1%
LMArena Hard Prompts1420—
DTBench73.6%—
LMCA30.9%—
Epoch Capabilities Index142.41—
ForecastBench61.4—

Math Not comparable

Claude Haiku 4.5: 44.9 (#78), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
OTIS Mock AIME 2024-202566.7%—
Omni-MATH56.1%—
LMArena Math1396—
MATH Level 596.4%—
FrontierMath (Feb 2025 set)5.9%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Claude Haiku 4.5 leads

Claude Haiku 4.5: 37.7 (#153), o1-pro: 29.7 (#234)

BenchmarkClaude Haiku 4.5o1-pro
GPQA Diamond71.2%—
Humanity's Last Exam—8.1%
SimpleQA Verified13.2%—
MMLU-Pro77.7%—
Vectara Hallucination Rate9.8%—
GPQA (HELM)60.5%—
LMArena Expert1442—

Multimodal Not comparable

Claude Haiku 4.5: 26.8 (#118), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
Blueprint-Bench 20%—
LMArena Document1420—

Multilingual Not comparable

Claude Haiku 4.5: 49.9 (#129), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
LMArena Non-English1377—
LMArena Chinese1417—
LMArena French1408—
LMArena German1375—
LMArena Japanese1339—
LMArena Korean1347—
LMArena Russian1381—
LMArena Spanish1420—

Instruction Following Not comparable

Claude Haiku 4.5: 71.4 (#149), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
IFEval80.1%—
LMArena Instruction Following1414—

Long Context Not comparable

Claude Haiku 4.5: 43.6 (#92), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
LMArena Longer Query1427—

Writing & Preference Not comparable

Claude Haiku 4.5: 57.9 (#123), o1-pro: —

BenchmarkClaude Haiku 4.5o1-pro
LMArena Text1396—
LMArena Creative Writing1372—
WildBench83.9%—
EQ-Bench 41064—
LMArena Multi-Turn1409—

Frequently asked questions

Is Claude Haiku 4.5 better than o1-pro?

Claude Haiku 4.5 is the stronger model overall, scoring 39.5 to 31.5 on the Noometry Index.

Which is cheaper, Claude Haiku 4.5 or o1-pro?

Claude Haiku 4.5 is cheaper. It lists at $1 per million input tokens and $5 per million output tokens; o1-pro lists at $150 and $600.

Which has the bigger context window?

Both accept 200K tokens.

How many benchmarks do Claude Haiku 4.5 and o1-pro share?

1 benchmark has published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and o1-pro has 3.

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