OpenAI o3 vs GPT-4.1 mini
Performance benchmarks + pricing comparison — updated April 2026
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 |
GPT-4.1 mini
OpenAICost-optimized GPT-4.1 variant. Strong coding capability at budget pricing, replacing GPT-4o mini for many use cases.
| Input | $0.400/M |
| Output | $1.60/M |
| Context | 128K tokens |
| Best For | High-volume coding, cost-sensitive projects, automation |
| Benchmark | 68/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | OpenAI o3 | GPT-4.1 mini | Leader |
|---|---|---|---|
| Overall Score | 85 | 68 | o3 leads by 17pts |
| SWE-bench Verified | 82 | 62 | o3 leads by 20pts |
| LiveCodeBench | 88 | 70 | o3 leads by 18pts |
| HumanEval | 96 | 86 | o3 leads by 10pts |
| BigCodeBench | 74 | 54 | o3 leads by 20pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | OpenAI o3 | GPT-4.1 mini | Savings |
|---|---|---|---|
| Small Script (1K lines) | $1.55 | $0.06 | GPT-4.1 mini saves $1.49 (96%) |
| Medium Feature (10K lines) | $11.50 | $0.46 | GPT-4.1 mini saves $11.04 (96%) |
| Large Project (50K lines) | $57.50 | $2.30 | GPT-4.1 mini saves $55.20 (96%) |
| Code Review (5K lines) | $2.75 | $0.11 | GPT-4.1 mini saves $2.64 (96%) |
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 o3 | 85 | $0.167/pt | Higher cost per point |
| GPT-4.1 mini | 68 | $0.022/pt | Better value |
GPT-4.1 mini delivers the best value at $0.022 per score point.
Strengths & Weaknesses
OpenAI o3
- + Latest reasoning model
- + Top-tier across all benchmarks
- - Very expensive
- - Slow
GPT-4.1 mini
- + Good value
- + Latest architecture
- - Mini variant limitations
Verdict
GPT-4.1 mini is cheaper at $0.400/M, but OpenAI o3 scores higher on benchmarks (85 vs 68).
Choose GPT-4.1 mini for cost-sensitive projects, OpenAI o3 when performance matters most.
Compare with Other Models
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Claude 3.5 Sonnet
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Claude 3.5 Haiku
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Claude 3 Opus
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Claude 3 Sonnet
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