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Grok 4.20 Multi-Agent (0309) API Pricing

Grok 4.20 Multi-Agent 0309 is the 2M-context Grok variant for long-horizon orchestration. $1.25/M input, $2.5/M output, and $0.2/M cached input. It keeps the same per-token price as the other Grok 4.20 dated variants.

Input - per 1M tokens
$1.25/M
Source xAI active
Output - per 1M tokens
$2.50/M
Use for cost checks active
Cached input
$0.20/M
Cache hit price discounted
Effective - agentic blend
$0.56/M
92/8 split - 82% cache
§ 01 / TERMINAL

Run the numbers.

Calculator pre-loaded with Grok 4.20 Multi-Agent (0309) rates. Tweak spend, output mix, or cache hit rate to compare this model with nearby alternatives.

$ /mo
Workload split
Prompt cache hit rate
Tokens you can process
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Words equivalent (English)
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Effective rate
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§ 02 / SCENARIOS

Real-world presets.

AGENT LOOP

Repo-wide bug fix

$0.049/task
81k in - 7k out~2,040 units/$100
LONG DOC

Reading 100-page contracts

$0.088/doc
175k in - 8k out~1,136 units/$100
RAG SUPPORT

Support agent ticket triage

$0.004/ticket
4k in - 1k out~25,000 units/$100
ASSISTANT TURN

Research planning turn

$0.010/turn
12k in - 2k out~10,000 units/$100
§ 03 / TAPE

Price history.

Grok 4.20 Multi-Agent (0309) is active; listed at $1.25/$2.5 per M.

Input · $1.3/M
Output · $2.5/M
Cached · $0.20/M
MAR 09 Dated multi-agent snapshot at $1.25/M input, $0.20/M cached input, and $2.50/M outputMAY 18 Active Grok 4.20 multi-agent variant verified on xAI model docs
§ 04 / TOKENIZER

Paste text. See tokens. See cost.

Estimate · grok-tokenizer-estimate · ≈4.2 chars/token Auto-counts as you type

This is a chars-per-token approximation, not a real tokenizer. Actual tokens vary by language, code density, and tool-call overhead — counts are typically ±10–20% off for English prose, more for code or non-Latin scripts. For exact billing, use the vendor's official tokenizer.

Characters —
Words —
Tokens (estimated) —
Cost as input · uncached —
Cost as output · uncached —
Cost as cached input —
§ 05 / SHELF

Up against the shelf.

All models →
Model Input /M Output /M Effective blended Context Best for
Grok 4.20 Multi-Agent (0309) $1.25 cache $0.20 $2.50 $0.56 current page 2M Grok long-context agents
Grok 4.3 $1.25 cache $0.20 $2.50 $0.56 same blend 1M Grok long-context agents
Grok 4 Fast $0.20 cache $0.05 $0.50 $0.11 cheaper 2M Grok long-context agents
GPT-5.4 $2.50 cache $0.25 $15.00 $1.80 pricier 1.05M Open-weight multimodal work
Claude Sonnet 4.6 $3.00 cache $0.30 $15.00 $1.92 pricier 1M Open-weight multimodal work
Gemini 2.5 Pro $1.25 cache $0.13 $10.00 $1.10 pricier 2M Open-weight multimodal work
DeepSeek V4 Pro $0.43 cache $0.00 $0.87 $0.14 cheaper 1M Low-cost reasoning

Frequently asked.

Short answers for teams checking Grok 4.20 Multi-Agent (0309) pricing, status, and migration choices.

Q · 01 Is Grok 4.20 Multi-Agent (0309) still available? +
Grok 4.20 Multi-Agent (0309) is listed as active/current in the pricing snapshot and was checked against the vendor page used for this entry.
Q · 02 How much does Grok 4.20 Multi-Agent (0309) cost? +
Grok 4.20 Multi-Agent (0309) is listed at $1.25/M input and $2.5/M output.
Q · 03 Is cached-input pricing included? +
Yes. Cached input is shown at $0.2/M.
Q · 04 What should teams compare it against? +
Use the shelf to compare nearby current models. Snapshot replacement: current same-provider models.
Q · 05 Why keep this page? +
These pages preserve live price checks, preview economics, and migration context in one consistent calculator format.
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Reviewed by Yaroslav Vikhariev Founder - AI//COST - Last verified 2026-05-18 - Vendor pricing
Methodology Report a correction More by Y.V.