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o3 vs DeepSeek V3
A detailed comparison of o3 (OpenAI) and DeepSeek V3 (DeepSeek) across pricing, performance, and features.
Pricing Comparison
| Metric | o3 | DeepSeek V3 | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.40 | $0.14 | -65% |
| Output / 1M tokens | $1.60 | $0.28 | -83% |
| Context window | 200K | 164K | — |
| Max output | 100K | 16.384K | — |
Benchmark Comparison
| Benchmark | o3 | DeepSeek V3 |
|---|---|---|
| MMLU-Pro | 87% | 78% |
| HumanEval | 94.5% | 89% |
| GPQA | 79.2% | — |
Capabilities
| Capability | o3 | DeepSeek V3 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✓ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✗ |
| vision | ✓ | ✗ |
o3 Strengths
- ✓Recently repriced — now very cheap
- ✓Excellent logical reasoning
- ✓200K context window
o3 Weaknesses
- ✗Slower due to reasoning overhead
- ✗Overkill for simple tasks
DeepSeek V3 Strengths
- ✓Cheapest capable model available
- ✓Strong coding performance
- ✓Open-source
DeepSeek V3 Weaknesses
- ✗No vision support
- ✗Smaller context than competitors
- ✗China-based — availability concerns
Quick Verdict
Best value: DeepSeek V3 is the more affordable option at $0.14/$0.28 per 1M tokens.
Higher benchmarks: o3 scores higher on average across available benchmarks (86.9% avg).
Larger context: o3 supports 200K tokens.
Choose DeepSeek V3 if cost matters most. Choose o3 if you need the best possible quality for complex tasks.