AI Observatory / Model Radar
xAI / x-ai/grok-4.20
xAI: 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...
2,000,000
Context
N/A
Max output
$1.25 / 1M
Prompt price
2026-03-31
Created
01 / Snapshot
Pricing, context, modalities, and parameters.
Model Radar detail pages stay neutral and operator-readable: core metadata first, then workflow fit.
| Provider | xAI | Input modalities | text, image, file |
|---|---|---|---|
| Output modalities | text | Prompt price | $1.25 / 1M |
| Completion price | $2.50 / 1M | Request price | N/A |
| Context length | 2,000,000 | Max completion tokens | N/A |
| Supported parameters | include_reasoning, logprobs, max_tokens, reasoning, response_format, seed, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_p | ||
Best for
x-ai/grok-4.20
xAI: 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...
Deep analysis
Cross-modal work
Long context
High-volume usage
new
vision
tool-capable
long-context
low-cost
03 / Colophon
Routes and exits.
Each model page stays simple: overview, compare, related models, then back to the public hub.