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Side-by-side
DeepSeek R1 vs Claude Sonnet 4.6
DeepSeek vs Anthropic — head-to-head specs and pricing.
DeepSeek
DeepSeek R1
Reasoning model — rivals o1/o3 at 20x lower cost
DeepSeek-R1 is an open reasoning model from DeepSeek. Excels at math, coding, and step-by-step logic. Outputs include visible chain-of-thought. WARNING: Per DeepSeek ToS, prompts may be used for model training and are processed on servers in China. Not recommended for sensitive workloads.
Anthropic
Claude Sonnet 4.6
Balanced speed + capability.
Sonnet is Anthropic's balanced model for general agents and chat.
| Spec | DeepSeek R1 | Claude Sonnet 4.6 |
|---|---|---|
| Provider | DeepSeek | Anthropic |
| Input cost / 1M tokens | $0.66 | $3.60 |
| Output cost / 1M tokens | $2.63 | $18.00 |
| Context window | 65,536 tokens | 200,000 tokens |
| Max output tokens | 8,192 | 16,000 |
| Streaming support | ✓ | ✓ |
| Tool calling | — | ✓ |
| Vision input | — | ✓ |
| JSON mode | ✓ | — |
| Status | ACTIVE | ACTIVE |
Use both via OneAPIKey — one key, one bill
OneAPIKey aggregates DeepSeek, Anthropic, and 10 more providers behind a single API. Smart Routing automatically picks the best model per request — or you choose explicitly.