Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.
grok-4.2-beta by xai is currently listed from a single provider. Its reference price is $2.00 per 1M input tokens and $6.00 per 1M output tokens.
The context window is 2,000,000 tokens, with an output limit of 2,000,000 tokens. It supports reasoning, tool use, and structured output. Accepted input modalities are Text and Image.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Requesty | Gateway | $2.00 tiered >200K: $4.00 | $6.00 | $0.20 | $2.00 | 2,000,000 | 2,000,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.