Claude 3.5 Haiku vs OpenAI o3
Performance benchmarks + pricing comparison — updated April 2026
Claude 3.5 Haiku
AnthropicFast, cost-effective model for high-volume tasks. Great for code review and simple queries.
| Input | $0.800/M |
| Output | $4.00/M |
| Context | 200K tokens |
| Best For | Code review, high-volume tasks, simple queries |
| Benchmark | 52/100 |
OpenAI o3
OpenAINext generation reasoning model. Improved coding and math over o1.
| Input | $10.00/M |
| Output | $40.00/M |
| Context | 200K tokens |
| Best For | Advanced coding, complex problem-solving |
| Benchmark | 85/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | Claude 3.5 Haiku | OpenAI o3 | Leader |
|---|---|---|---|
| Overall Score | 52 | 85 | o3 leads by 33pts |
| SWE-bench Verified | 45 | 82 | o3 leads by 37pts |
| LiveCodeBench | 55 | 88 | o3 leads by 33pts |
| HumanEval | 75 | 96 | o3 leads by 21pts |
| BigCodeBench | 38 | 74 | o3 leads by 36pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | Claude 3.5 Haiku | OpenAI o3 | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.16 | $1.55 | Claude 3.5 Haiku saves $1.39 (89%) |
| Medium Feature (10K lines) | $1.24 | $11.50 | Claude 3.5 Haiku saves $10.26 (89%) |
| Large Project (50K lines) | $6.21 | $57.50 | Claude 3.5 Haiku saves $51.29 (89%) |
| Code Review (5K lines) | $0.32 | $2.75 | Claude 3.5 Haiku saves $2.43 (88%) |
Value Analysis (Price per Benchmark Score Point)
Lower is better — how much you pay for each point of benchmark performance.
| Model | Overall Score | Price per Score Point | Verdict |
|---|---|---|---|
| Claude 3.5 Haiku | 52 | $0.015/pt | Better value |
| OpenAI o3 | 85 | $0.167/pt | Higher cost per point |
Claude 3.5 Haiku delivers the best value at $0.015 per score point.
Strengths & Weaknesses
Claude 3.5 Haiku
- + Fastest Claude model
- + Cheapest option
- + Good for code review
- - Struggles with complex tasks
- - Limited reasoning depth
OpenAI o3
- + Latest reasoning model
- + Top-tier across all benchmarks
- - Very expensive
- - Slow
Verdict
Claude 3.5 Haiku is cheaper at $0.800/M, but OpenAI o3 scores higher on benchmarks (85 vs 52).
Choose Claude 3.5 Haiku for cost-sensitive projects, OpenAI o3 when performance matters most.
Compare with Other Models
Claude Sonnet 4
AnthropicAnthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.
Claude Opus 4
AnthropicAnthropic's most powerful model. Best for complex reasoning and challenging coding tasks.
Claude 3.5 Sonnet
AnthropicPrevious generation Sonnet. Still excellent for coding tasks at the same price point.
Claude 3 Opus
AnthropicFirst generation Opus. Highest reasoning capability in the Claude 3 family.
Claude 3 Sonnet
AnthropicFirst generation Sonnet. Balanced performance for general tasks.
Claude 3 Haiku
AnthropicCheapest Claude model. Fast responses for simple tasks and basic coding.