Claude 3 Sonnet vs OpenAI o1
Performance benchmarks + pricing comparison — updated April 2026
Claude 3 Sonnet
AnthropicFirst generation Sonnet. Balanced performance for general tasks.
| Input | $3.00/M |
| Output | $15.00/M |
| Context | 200K tokens |
| Best For | General-purpose coding and reasoning |
| Benchmark | 65/100 |
OpenAI o1
OpenAIReasoning model optimized for complex problem-solving. Excels at math, science, and advanced coding.
| Input | $15.00/M |
| Output | $60.00/M |
| Context | 200K tokens |
| Best For | Complex math, advanced coding, scientific reasoning |
| Benchmark | 83/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | Claude 3 Sonnet | OpenAI o1 | Leader |
|---|---|---|---|
| Overall Score | 65 | 83 | o1 leads by 18pts |
| SWE-bench Verified | 58 | 80 | o1 leads by 22pts |
| LiveCodeBench | 68 | 84 | o1 leads by 16pts |
| HumanEval | 85 | 95 | o1 leads by 10pts |
| BigCodeBench | 50 | 73 | o1 leads by 23pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | Claude 3 Sonnet | OpenAI o1 | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.55 | $2.32 | Claude 3 Sonnet saves $1.77 (76%) |
| Medium Feature (10K lines) | $4.05 | $17.25 | Claude 3 Sonnet saves $13.20 (77%) |
| Large Project (50K lines) | $20.25 | $86.25 | Claude 3 Sonnet saves $66.00 (77%) |
| Code Review (5K lines) | $0.90 | $4.13 | Claude 3 Sonnet saves $3.23 (78%) |
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 Sonnet | 65 | $0.046/pt | Better value |
| OpenAI o1 | 83 | $0.181/pt | Higher cost per point |
Claude 3 Sonnet delivers the best value at $0.046 per score point.
Strengths & Weaknesses
Claude 3 Sonnet
- + Reliable
- + Good value
- - Two generations behind
OpenAI o1
- + Strong step-by-step reasoning
- + Best at math-heavy coding
- - Expensive
- - Slow
Verdict
Claude 3 Sonnet is cheaper at $3.00/M, but OpenAI o1 scores higher on benchmarks (83 vs 65).
Choose Claude 3 Sonnet for cost-sensitive projects, OpenAI o1 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 3.5 Haiku
AnthropicFast, cost-effective model for high-volume tasks. Great for code review and simple queries.
Claude 3 Opus
AnthropicFirst generation Opus. Highest reasoning capability in the Claude 3 family.
Claude 3 Haiku
AnthropicCheapest Claude model. Fast responses for simple tasks and basic coding.