Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Data sourced from the Interestana AI Index, kept current as developers update their models.
Model A — DeepSeek
DeepSeek R1 is an open-weight reasoning model trained primarily via reinforcement learning. It reproduced much of the performance of OpenAI’s o1 at a fraction of the inference price.
Model B — OpenAI
o3 is OpenAI’s flagship reasoning model, scaling deliberate test-time compute to solve novel mathematics and science problems that earlier LLMs could not.
| Property | DeepSeek R1 | OpenAI o3 |
|---|---|---|
| Released | Jan 20, 2025 | Jan 31, 2026 |
| Developer | DeepSeek | OpenAI |
| Type | reasoning | reasoning |
| License | open-weight | proprietary |
| Context window | 128,000 | 200,000 |
| Parameters | 685B MoE (37B active) | undisclosed |
| Input $/M tokens | $0.55 | $15.00 |
| Output $/M tokens | $2.19 | $60.00 |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins).
| Benchmark | DeepSeek R1 | OpenAI o3 |
|---|---|---|
| AIME 2024 | 79.8% | 96.7% |
| GPQA Diamond | 71.5% | 87.7% |
No exclusive capabilities
No exclusive capabilities
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