StarSeaAPI
Anthropic
Claude family — long-context reasoning and the model behind Claude Code
Claude models are the usual pick for long-document reasoning and agentic coding. StarSeaAPI terminates the Anthropic Messages protocol natively, so Claude Code and other Anthropic-native clients work without a translation layer.
Models (6)
| Models | Input $/M | Output $/M | Intelligence index | Coding index |
|---|---|---|---|---|
| claude-sonnet-5 | $2.00 | $10.00 | 45.1 | 71.5 |
| claude-sonnet-4-6 | $3.00 | $15.00 | — | — |
| claude-opus-4-6 | $5.00 | $25.00 | — | — |
| claude-opus-4-7 | $5.00 | $25.00 | — | — |
| claude-opus-4-8 | $5.00 | $25.00 | — | — |
| claude-opus-5 | $5.00 | $25.00 | 54.1 | 78.0 |
Prices are per 1M tokens in USD · ¥6.6 = $1