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grok-4.20-multi-agent-0309ChatExamples verified 2026-09-25

Grok 4.20 Multi-Agent

Multi-agent collaboration with 2M context; reasoning.effort sets how many agents take part.

Official price
$1.25 / $2.50/ 1M tokensInput / output
Context window
2M tokens2,000,000
Notes
  • On Chat Completions, completion_tokens excludes reasoning tokens; add reasoning_tokens when reconciling usage.
  • stop, presence_penalty, and frequency_penalty aren't supported.
  • Responses only; Chat Completions returns an error.
Read the integration guideJSON Schema

Pricing

Official price in USD. Actual charge = official price × group multiplier.

Input
$1.25 / 1M tokens
Cached input
$0.20 / 1M tokens
Output
$2.50 / 1M tokens
Context over 200K
input ×2 · output ×2

Endpoints

Same family

grok-4.20-0309-reasoninggrok-4.6grok-4.5grok-4.3

Prices come from the public catalog; limits come from specs exported from the gateway’s validation code. Actual charge = official price × group multiplier.