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Grok 4.20 Reasoning

Vercel AI Gateway

Grok 4.20 Reasoning by Vercel AI Gateway costs $1.25 per 1M input tokens and $2.50 per 1M output tokens, with a 2M-token context window.

Pricing

Input (per 1M tokens)
$1.25
Output (per 1M tokens)
$2.50
Cached input (per 1M)
$0.20

Specifications

Provider
Vercel AI Gateway
Context window
2M tokens
Parameters
—
Released
Mar 2026
Open weights
No
Frontier model
No

Compare Grok 4.20 Reasoning with…

Grok 4.20 Reasoning vs Grok 4.20 Multi Agent Beta$2.50/1MGrok 4.20 Reasoning vs Pixtral 12B$0.15/1MGrok 4.20 Reasoning vs Pixtral Large (latest)$6.00/1MGrok 4.20 Reasoning vs GPT-5.3 Chat$14.00/1MGrok 4.20 Reasoning vs o3-deep-research$40.00/1MGrok 4.20 Reasoning vs GLM-4.6V$0.90/1M

FAQ

How much does Grok 4.20 Reasoning cost?

Grok 4.20 Reasoning is priced at $1.25 per 1M input tokens and $2.50 per 1M output tokens. Output tokens cost more than input.

What is Grok 4.20 Reasoning's context window?

Grok 4.20 Reasoning supports a context window of 2M tokens — the maximum prompt plus response length it can handle in a single request.

Is Grok 4.20 Reasoning open weight?

No — Grok 4.20 Reasoning is a closed/proprietary model accessed via API.

Data as of 2026-06-28. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.