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Grok 4.20 Multi-Agent (0309)

Beta

Marked Beta on the official model page; designed for multi-agent orchestration. Aliases include grok-4.20-multi-agent, grok-4.20-multi-agent-latest. Modality 'text, image -> text'. Lower rate limits than the standard 4.20 SKUs (9 req/s, 2.5M tokens/min vs 37 req/s, 10M tokens/min). PRICE: $1.25 in / $2.50 out / $0.20 cached per 1M, re-read and confirmed first-party at docs.x.ai/docs/models on 2026-08-03 (the <200K-token tier; xAI doubles every rate to $2.50/$5.00/$0.40 above 200K input tokens, which this schema has no column for). CONTEXT: docs.x.ai states 1M and that is what we carry; a third-party claim of 2M appears on no xAI surface we have read, so it is not used.

Grok 4.20 Multi-Agent (0309) by xAI costs $1.25 per 1M input tokens and $2.50 per 1M output tokens ($1.56/1M blended), with a 1M (1.000.000-token) context window. It is in beta.

Last verified: 13 Aug 2026 · sourced from official provider documentation

Provider
xAI
Status
Beta
Input price
$1.25 / 1M tokens
Output price
$2.50 / 1M tokens
Cached input
$0.2 / 1M tokens
Blended price
$1.56 / 1M tokens
Context window
1.000.000 tokens (1M)
Max output
—
Modality
text-in, image-in, text-out
Open weights
No — API only
Knowledge cutoff
—
Released
—
API string
grok-4.20-multi-agent-0309

Source: xAI official documentation ↗

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FAQ

Grok 4.20 Multi-Agent (0309) — questions & answers

How much does Grok 4.20 Multi-Agent (0309) cost?

Grok 4.20 Multi-Agent (0309) is priced at $1.25 per 1M input tokens and $2.50 per 1M output tokens ($1.56/1M blended at a 3:1 input-to-output ratio), with cached input at $0.2 per 1M tokens.

What is the context window of Grok 4.20 Multi-Agent (0309)?

Grok 4.20 Multi-Agent (0309) has a 1.000.000-token context window (1M).

Is Grok 4.20 Multi-Agent (0309) deprecated?

No — Grok 4.20 Multi-Agent (0309) is in beta and not currently scheduled for deprecation or retirement in our tracker.

Does Grok 4.20 Multi-Agent (0309) support image or vision input?

Yes — Grok 4.20 Multi-Agent (0309) accepts image input. Listed modalities: text-in, image-in, text-out.

Can I self-host Grok 4.20 Multi-Agent (0309)?

No — Grok 4.20 Multi-Agent (0309) is proprietary. Its weights are not publicly released, so it is available only through xAI's API (or hosted partners), not for self-hosting.

What is the API model string for Grok 4.20 Multi-Agent (0309)?

The API model identifier for Grok 4.20 Multi-Agent (0309) is "grok-4.20-multi-agent-0309" when calling xAI's API.