Claude Haiku 4.5 vs o1
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
o1 by OpenAI wins on 9 of 16 benchmarks against Claude Haiku 4.5 by Anthropic, which leads on 6. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, o1 scores 1360 on Chatbot Arena ELO compared to Claude Haiku 4.5's 1220, while o1 scores 82.0% on MMLU-Pro compared to Claude Haiku 4.5's 65.0%.
Coding: In coding, o1 scores 89.0% on HumanEval+ compared to Claude Haiku 4.5's 78.0%, while o1 scores 48.9% on SWE-bench Verified compared to Claude Haiku 4.5's 30.0%, while o1 scores 55.0% on LiveCodeBench compared to Claude Haiku 4.5's 35.0%, while Claude Haiku 4.5 scores 43.9 on AA Coding Index compared to o1's 39.7.
Math: In math, o1 scores 94.8% on MATH compared to Claude Haiku 4.5's 70.0%, while o1 scores 97.5% on GSM8K compared to Claude Haiku 4.5's 88.0%.
Reasoning: In reasoning, o1 scores 77.3% on GPQA Diamond compared to Claude Haiku 4.5's 40.0%, while o1 scores 32.0% on ARC-AGI compared to Claude Haiku 4.5's 18.0%.
Context: In context, both score 200K on Context Length.
Pricing Comparison
Claude Haiku 4.5 costs $1.0/1M input tokens and $5.0/1M output tokens, while o1 costs $15.0/1M input and $60.0/1M output. Claude Haiku 4.5 is the more affordable option for API usage.
Speed Comparison
Claude Haiku 4.5 generates output at 180 tok/s compared to o1's 35 tok/s, and the time to first token is 120 ms for Claude Haiku 4.5 versus 1000 ms for o1. Claude Haiku 4.5 delivers faster throughput.
Verdict
For developers prioritizing affordability and speed, Claude Haiku 4.5 has the edge. For those who value coding and general intelligence and math, o1 is the stronger choice.
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Claude Haiku 4.5 vs o1 — FAQ
Which is better, Claude Haiku 4.5 or o1?
o1 wins on more benchmarks overall (9 vs 6). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Haiku 4.5 compare to o1 for coding?
o1 is better for coding, scoring 48.9% on SWE-bench Verified compared to 30.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Haiku 4.5 cheaper than o1?
Yes, Claude Haiku 4.5 is cheaper. Claude Haiku 4.5 costs $1.0/1M input and $5.0/1M output tokens. o1 costs $15.0/1M input and $60.0/1M output tokens.
Which is faster, Claude Haiku 4.5 or o1?
Claude Haiku 4.5 is faster, generating output at 180 tok/s compared to 35 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Haiku 4.5 vs o1 comparison cover?
This comparison covers 16 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, LiveCodeBench, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.