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Grok 4.20 Multi-Agent

Stable

xAI · Released 2026-04 · xai/grok-4.20-multi-agent

Overview

Model from xAI's Grok family with fast inference, large context and strong performance on real-time reasoning tasks. Grok 4.20 Multi-Agent supports up to 2M tokens of context, native vision input, and an extended reasoning mode. Served through the FirmLink unified API with OpenAI-compatible endpoints.

Function CallingJSON ModeStreamingReasoningTextVision

API example

Fully OpenAI-compatible — just change the model field.

curl https://api.firmlinktech.com/v1/chat/completions \
  -H "Authorization: Bearer $FIRMLINK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "xai/grok-4.20-multi-agent",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Pricing

Input$1.25 /1M
Output$2.50 /1M
Context window2M
Max output66K
Grok 4.20 Multi-Agent is provided by xAI and served through the FirmLink gateway. Availability and limits follow the provider's terms.