Grok 4.20 (Reasoning)
As of Oct 4, 2026, the cheapest Grok 4.20 (Reasoning) API price is $1.25 per 1M input tokens (Eden AI) and $2.5 per 1M output tokens (Eden AI). Grok 4.20 (Reasoning) is offered by 12 providers in the grok family, reasoning enabled. xAI's own rate is $2.5 per 1M output tokens.
API pricing by provider
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.
| Provider | 1M input | 1M output | 1M cache read | 1M cache write | Context |
|---|---|---|---|---|---|
| Eden AI | Cheapest†$1.25 | Cheapest$2.5 | $0.2 | — | 1.0M |
| Vertex | †$1.25 | $2.5 | $0.2 | — | 2.0M |
| Impossibl | $1.25 | $2.5 | $0.2 | — | 1.0M |
| DevPass (LLM Gateway) | †$1.25 | $2.5 | $0.2 | — | 2.0M |
| LLM Gateway | †$1.25 | $2.5 | $0.2 | — | 2.0M |
| OCI Generative AI | †$1.25 | $2.5 | $0.2 | — | 1.0M |
| Tempr Gateway | †$1.25 | $2.5 | $0.2 | — | 1.0M |
| Vercel AI Gateway | †$1.25 | $2.5 | $0.2 | — | 2.0M |
| Vercel AI Gateway | †$1.25 | $2.5 | $0.2 | — | 2.0M |
| xAI | †$1.25 | $2.5 | $0.2 | — | 1.0M |
| Azure | $2 | $6 | — | — | 262k |
| Cloudflare AI Gateway | $2 | $6 | $0.2 | — | 2.0M |
| DevPass (LLM Gateway) | †$2 | $6 | $0.2 | — | 2.0M |
| LLM Gateway | †$2 | $6 | $0.2 | — | 2.0M |
| Ofox | $4 | $12 | $0.4 | — | 2.0M |
Grok 4.20 (Reasoning) pricing FAQ
What is the cheapest Grok 4.20 (Reasoning) API?
As of Oct 4, 2026, Eden AI has the lowest Grok 4.20 (Reasoning) output price at $2.5 per 1M tokens, and Eden AI has the lowest input price at $1.25 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.
How much does Grok 4.20 (Reasoning) cost on xAI?
xAI charges $1.25 per 1M input tokens and $2.5 per 1M output tokens for Grok 4.20 (Reasoning).
How many providers offer Grok 4.20 (Reasoning)?
12 providers list Grok 4.20 (Reasoning) on Sovyron; 15 of them sell it at a metered per-token price.
Is Grok 4.20 (Reasoning) free?
No provider in the Sovyron catalog lists a free tier for Grok 4.20 (Reasoning).
What is the context window of Grok 4.20 (Reasoning)?
Grok 4.20 (Reasoning) supports a 2.0M-token context window and up to 2.0M output tokens.