Grok 4.20 Multi-Agent
openrouter The API that serves this model and sets the prices shown here. x-ai/grok-4.20-multi-agent The model identifier to send in API requests. LLM Generates text from a prompt, so it can be compared with other LLMs on price and capability.Provider: xai · served via OpenRouter
Knowledge cutoff: September 2025
Nothing to act on today. The cost is the checking: someone has to remember to look again next month, and the month after. Coolhand watches this model for you and automatically updates your agents to the most compatible replacement the moment a retirement is announced — one less thing on your list, permanently.
Sticker prices & cost-per-token
List rates as published by OpenRouter, before any volume or enterprise discounts.
$1.25
$2.50
2,000,000 tokens
1,800,000
tokens per response (includes reasoning tokens)
Closed weights
$0.20
Tiered / volume pricing
| Condition | Input cost | Output cost | Notes |
|---|---|---|---|
| Above 200,000 input tokens | $2.50 / 1M | $5.00 / 1M |
Get this data free
Want to stay updated on price changes on this model? Pull this data free (no API key required) here:
curl "https://coolhandlabs.com/api/v2/inference_apis?q%5Bmodel_eq%5D=x-ai%2Fgrok-4.20-multi-agent&q%5Bsource_api_eq%5D=openrouter"Pricing History
| Effective | Price |
|---|---|
| Aug 16, 2026 – present | Input cost: $1.25 / 1M, Output cost: $2.50 / 1M, Cached input cost: $0.20 / 1M, Cache creation cost: $0.00 / 1M, 5-minute cache write cost: $0.00 / 1M, 1-hour cache write cost: $0.00 / 1M, Reasoning output cost: $0.00 / 1M, Cache storage cost: $0.00 / 1M/hr |
History
No automated scan changes recorded yet.
| Date | Changed by | What changed |
|---|---|---|
| Aug 16, 2026 | Unknown | Initial record created |
Source
https://models.dev/api.json (models.dev provider 'openrouter', bulk import 2026-08-13)Comparable models
No comparable models identified yet.
Reliability
No reliability incidents recorded in the last 90 days.
Frequently asked questions
Grok 4.20 Multi-Agent (xai via OpenRouter) costs $1.25 per 1M input tokens and $2.50 per 1M output tokens, as last published by OpenRouter.
Grok 4.20 Multi-Agent has a context window of 2,000,000 tokens (the maximum combined input and output it can handle in a single request).
Grok 4.20 Multi-Agent can generate up to 1,800,000 tokens in a single response. Reasoning (thinking) tokens count toward this limit.
Grok 4.20 Multi-Agent's training data runs through September 2025, so it may not know about later events. Coolhand records the cutoff at month precision, since providers often publish only the month.
Grok 4.20 Multi-Agent accepts image, pdf, and text as input and produces text as output, as recorded in the Coolhand catalog.
No — the weights of Grok 4.20 Multi-Agent have not been released, so it is only available through hosted APIs.
No, Grok 4.20 Multi-Agent is currently active with no announced deprecation date.
Call GET https://coolhandlabs.com/api/v2/inference_apis?q[source_api_eq]=openrouter&q[model_eq]=x-ai%2Fgrok-4.20-multi-agent — free, no API key required, and scoped to just this model since source_api and model together are unique. See https://coolhandlabs.com/docs for the full REST API reference.
Coolhand also tracks Grok Code Fast 1, Grok 4.20 (Non-Reasoning), Grok 4.20 (Reasoning), Grok 4.20 Multi-Agent, Grok 4.3, and Grok 4.5 from xai. Some may already be deprecated, so check each model's status alongside its current pricing.
| Model | Input cost | Output cost | Context window | Max output tokens | Status |
|---|---|---|---|---|---|
| Grok Code Fast 1 via OpenCode | $0.00/1M $0.0000000000 | $0.00/1M $0.0000000000 | 256,000 | 256,000 |
Deprecated Aug 12, 2026
|
| Grok 4.20 (Non-Reasoning) | $1.25/1M $0.0000012500 | $2.50/1M $0.0000025000 | 1,000,000 | 30,000 |
Deprecated May 15, 2026
|
| Grok 4.20 (Reasoning) | $1.25/1M $0.0000012500 | $2.50/1M $0.0000025000 | 1,000,000 | 30,000 |
Deprecated May 15, 2026
|
| Grok 4.20 Multi-Agent | $1.25/1M $0.0000012500 | $2.50/1M $0.0000025000 | 1,000,000 | 30,000 |
Deprecated May 15, 2026
|
| Grok 4.3 | $1.25/1M $0.0000012500 | $2.50/1M $0.0000025000 | 1,000,000 | 30,000 |
Deprecated May 15, 2026
|
| Grok 4.5 | $2.00/1M $0.0000020000 | $6.00/1M $0.0000060000 | 500,000 | 500,000 |
Deprecated May 15, 2026
|
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