x-ai/grok-4.20
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| xAI | $1.25 | $2.50 | 2M | 100% |
Grok 4.20 costs $1.25 per million input tokens and $2.50 per million output tokens via OpenRouter, making it 219th cheapest of 298 paid models.
Grok 4.20 scores 29.7 on the Artificial Analysis Intelligence Index, ranking 82nd of 178 benchmarked models, with a GPQA Diamond score of 79%.
Grok 4.20 generates around 42 tokens per second with 3.7s time-to-first-token (p50), the 196th fastest tracked model.
Grok 4.20 supports a 2M-token context window. It accepts text, image, file input.