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Side-by-side
Grok 4 vs Claude Sonnet 4.6
xAI vs Anthropic — head-to-head specs and pricing.
xAI
Grok 4
xAI's flagship model with real-time X data.
Grok 4 from xAI — strong reasoning with real-time context from X (formerly Twitter).
Anthropic
Claude Sonnet 4.6
Balanced speed + capability.
Sonnet is Anthropic's balanced model for general agents and chat.
| Spec | Grok 4 | Claude Sonnet 4.6 |
|---|---|---|
| Provider | xAI | Anthropic |
| Input cost / 1M tokens | $3.60 | $3.60 |
| Output cost / 1M tokens | $18.00 | $18.00 |
| Context window | 256,000 tokens | 200,000 tokens |
| Max output tokens | — | 16,000 |
| Streaming support | ✓ | ✓ |
| Tool calling | ✓ | ✓ |
| Vision input | — | ✓ |
| JSON mode | — | — |
| Status | ACTIVE | ACTIVE |
Use both via OneAPIKey — one key, one bill
OneAPIKey aggregates xAI, Anthropic, and 10 more providers behind a single API. Smart Routing automatically picks the best model per request — or you choose explicitly.
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