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Side-by-side
Claude Sonnet 4.6 vs DeepSeek R1
Anthropic vs DeepSeek — head-to-head specs and pricing.
Anthropic
Claude Sonnet 4.6
Balanced speed + capability.
Sonnet is Anthropic's balanced model for general agents and chat.
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.
| Spec | Claude Sonnet 4.6 | DeepSeek R1 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Input cost / 1M tokens | $3.60 | $0.66 |
| Output cost / 1M tokens | $18.00 | $2.63 |
| Context window | 200,000 tokens | 65,536 tokens |
| Max output tokens | 16,000 | 8,192 |
| Streaming support | ✓ | ✓ |
| Tool calling | ✓ | — |
| Vision input | ✓ | — |
| JSON mode | — | ✓ |
| Status | ACTIVE | ACTIVE |
Use both via OneAPIKey — one key, one bill
OneAPIKey aggregates Anthropic, DeepSeek, and 10 more providers behind a single API. Smart Routing automatically picks the best model per request — or you choose explicitly.