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 — Anthropic
Claude 4 Opus is Anthropic’s most capable model for long-horizon agentic work, multi-step reasoning, and complex coding projects.
Model B — 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.
| Property | Claude 4 Opus | DeepSeek R1 |
|---|---|---|
| Released | May 22, 2025 | Jan 20, 2025 |
| Developer | Anthropic | DeepSeek |
| Type | reasoning | reasoning |
| License | proprietary | open-weight |
| Context window | 200,000 | 128,000 |
| Parameters | — | 685B MoE (37B active) |
| Input $/M tokens | $15.00 | $0.55 |
| Output $/M tokens | $75.00 | $2.19 |
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 | Claude 4 Opus | DeepSeek R1 |
|---|---|---|
| GPQA Diamond | 79.6% | 71.5% |
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