OpenAI o1 vs DeepSeek Chat V3
Performance benchmarks + pricing comparison — updated April 2026
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 |
DeepSeek Chat V3
DeepSeekVery affordable general-purpose model from DeepSeek. Strong coding and reasoning at low cost.
| Input | $0.270/M |
| Output | $1.10/M |
| Context | 128K tokens |
| Best For | Cost-sensitive projects, coding, general tasks |
| Benchmark | 62/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | OpenAI o1 | DeepSeek Chat V3 | Leader |
|---|---|---|---|
| Overall Score | 83 | 62 | o1 leads by 21pts |
| SWE-bench Verified | 80 | 56 | o1 leads by 24pts |
| LiveCodeBench | 84 | 64 | o1 leads by 20pts |
| HumanEval | 95 | 84 | o1 leads by 11pts |
| BigCodeBench | 73 | 46 | o1 leads by 27pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | OpenAI o1 | DeepSeek Chat V3 | Savings |
|---|---|---|---|
| Small Script (1K lines) | $2.32 | $0.04 | DeepSeek Chat V3 saves $2.28 (98%) |
| Medium Feature (10K lines) | $17.25 | $0.31 | DeepSeek Chat V3 saves $16.94 (98%) |
| Large Project (50K lines) | $86.25 | $1.57 | DeepSeek Chat V3 saves $84.68 (98%) |
| Code Review (5K lines) | $4.13 | $0.07 | DeepSeek Chat V3 saves $4.05 (98%) |
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 |
|---|---|---|---|
| OpenAI o1 | 83 | $0.181/pt | Higher cost per point |
| DeepSeek Chat V3 | 62 | $0.004/pt | Better value |
DeepSeek Chat V3 delivers the best value at $0.004 per score point.
Strengths & Weaknesses
OpenAI o1
- + Strong step-by-step reasoning
- + Best at math-heavy coding
- - Expensive
- - Slow
DeepSeek Chat V3
- + Excellent value
- + Strong coding focus
- - Less general-purpose
Verdict
DeepSeek Chat V3 is cheaper at $0.270/M, but OpenAI o1 scores higher on benchmarks (83 vs 62).
Choose DeepSeek Chat V3 for cost-sensitive projects, OpenAI o1 when performance matters most.
Compare with Other Models
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