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Side-by-side
Claude Sonnet 4.6 vs Claude Haiku 4.5
Anthropic vs Anthropic — 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.
Anthropic
Claude Haiku 4.5
Fast and cheap from Anthropic.
Haiku is Anthropic's small model — optimized for throughput and cost.
| Spec | Claude Sonnet 4.6 | Claude Haiku 4.5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input cost / 1M tokens | $3.60 | $0.96 |
| Output cost / 1M tokens | $18.00 | $4.80 |
| Context window | 200,000 tokens | 200,000 tokens |
| Max output tokens | 16,000 | 8,000 |
| Streaming support | ✓ | ✓ |
| Tool calling | ✓ | ✓ |
| Vision input | ✓ | — |
| JSON mode | — | — |
| Status | ACTIVE | ACTIVE |
Use both via OneAPIKey — one key, one bill
OneAPIKey aggregates Anthropic, Anthropic, and 10 more providers behind a single API. Smart Routing automatically picks the best model per request — or you choose explicitly.