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Grok 4.20 Beta 0309 Reasoning: API pricing, providers and specs

Textby xAIProprietary (API only)

Grok 4.20 Beta 0309 Reasoning is a text model by xAI. One provider serves it: AIHubMix, at $6 /1M.

Lowest price$6/1Mat AIHubMix
Maker's price—The maker does not sell it
Providers1
Context1MMax output 30K

How Grok 4.20 Beta 0309 Reasoning compares

Against the 737 text models on the site priced the same way.

  • Pricey for its class: at $6 /1M, its lowest price is above 79% of comparable models (median $1.10).
  • Its 1M-token context window is larger than 67% of them (median 262K), about 1500 pages of text.
  • 1 providers serve it; 0% of comparable models have fewer.

Grok 4.20 Beta 0309 Reasoning prices by provider

Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.

ProviderInputOutputPrompt cachingContext
AIHubMix$2/1M$6/1M$0.20/1M2M
Prices in US dollars, updated daily from each provider. Prices last checked Oct 25, 2026.

Specs

Type
Text
Maker
xAI
Inputs
Image, Text
Outputs
Text
Context
1M≈ 1500 pages of text
Max output
30K
Capabilities
Prompt caching, JSON, Reasoning, Tool calling, Vision
Released
—
License
proprietary
Open weights
No, API only

Alternatives to Grok 4.20 Beta 0309 Reasoning

Same kind of model from other makers, at a similar price.

ModelLowest priceContextArenaProviders
Grok 4.20 Beta 0309 Reasoningthis model$6/1M1M—1
Gemini 4 Argon$8/1M1.05M167326
Kimi K3$8.28/1M1.05M165547
Muse Wonder$16/1M1.05M—14
Claude Opus 5.5$16/1M1M180733
GPT-6.1 Sol$8/1M1.05M174927
GPT-6 Sol$8/1M1.05M168228
Qwen3.8 2.4T A95B$4.11/1M1M—22
Gemini 3 Flash$2.40/1M1.05M14665

More from xAI

Grok 4.7xAI$4.80/1MGrok Build 0.1xAI$1.60/1MGrok 3xAI$15/1MGrok 4.6xAI$4.80/1MGrok 4.20xAI$2.50/1MGrok-4xAI$14.25/1MGrok 4.5xAI$3.20/1MGrok Voice TTS 1.0xAI$0.015/1K chars
All 41 xAI models

Grok 4.20 Beta 0309 Reasoning FAQ

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