Grok 4.20 Multi-Agent

spacexai/grok-4.20-multi-agent

A chat model with a 2M-token context window, at $1.3125 per million input tokens and $2.625 per million output tokens.

Details

Maker: spacexai
Kind: Chat
Context window: 2,000,000 tokens
Max output: 2,000,000 tokens
Input: $1.3125 per million tokens
Cached input: $0.21 per million tokens, 84% off
Cache write: Same as input
Output: $2.625 per million tokens
Capabilities: Reasoning, tool use, vision, file input, web search
Takes: Text, image, pdf
Returns: Text
Zero data retention: Yes, on every provider
No training on requests: Yes, on every provider
Released: 2026-03-10
Newer model: spacexai/grok-4.20-multi-agent-betaReleased later by the same maker, costs no more, and lists the same capabilities. Compare the two

Description

Multiple agents collaborate in parallel to perform deep research tasks.

Call it

curl

curl https://phantom.codes/v1/chat/completions \
  -H "Authorization: Bearer $PHANTOM_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "spacexai/grok-4.20-multi-agent",
    "messages": [
      {"role": "user", "content": "Hello"}
    ]
  }'

Set PHANTOM_KEY to your key. Any OpenAI client works with the base URL https://phantom.codes/v1.

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