# Grok 4.20 (Reasoning) API pricing

The official API price of Grok 4.20 (Reasoning) is $1.25 per 1M input tokens and $2.5 per 1M output tokens (as of 2026-11-12). Context window: 1M tokens, up to 30K output tokens per request. 15 providers sell it, none below the official price.

- Type: Text
- Context: 1M
- Max output: 30K
- Released: 2026-03-09
- Open weights: No

## Price by provider (USD per 1M tokens)

| Provider | Model id | Input | Output | Cached | Notes |
| --- | --- | --- | --- | --- | --- |
| [xAI](https://docs.x.ai/docs/models) | grok-4.20-0309-reasoning | $1.25 | $2.5 | $0.2 | Official, Tiered pricing |
| [Eden AI](https://docs.edenai.co) | xai/grok-4.20-0309-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [Vertex](https://cloud.google.com/vertex-ai/generative-ai/docs/models) | xai/grok-4.20-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [Impossibl](https://impossibl.com/docs/models) | xai/grok-4.20-0309-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [DevPass (LLM Gateway)](https://llmgateway.io/docs) | grok-4-20-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [LLM Gateway](https://llmgateway.io/docs) | vertex-openai/grok-4-20-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [Merge Gateway](https://docs.merge.dev/merge-gateway) | xai/grok-4.20-0309-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [OCI Generative AI](https://docs.oracle.com/en-us/iaas/Content/generative-ai/pretrained-models.htm) | xai.grok-4.20-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [Tempr Gateway](https://temprhq.io/docs/gateway-reference.html) | xai/grok-4.20-0309-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [Vercel AI Gateway](https://github.com/vercel/ai/tree/5eb85cc45a259553501f535b8ac79a77d0e79223/packages/gateway) | spacexai/grok-4.20-reasoning | $1.25 | $2.5 | $0.2 | Tiered pricing |
| [302.AI](https://doc.302.ai) | grok-4.20-beta-0309-reasoning | $2 | $6 | — |  |
| [Cloudflare AI Gateway](https://developers.cloudflare.com/ai-gateway/) | xai/grok-4.20-0309-reasoning | $2 | $6 | $0.2 |  |
| [DevPass (LLM Gateway)](https://llmgateway.io/docs) | grok-4-20-beta-0309-reasoning | $2 | $6 | $0.2 | Tiered pricing |
| [LLM Gateway](https://llmgateway.io/docs) | xai/grok-4-20-beta-0309-reasoning | $2 | $6 | $0.2 | Tiered pricing |
| [Requesty](https://requesty.ai/solution/llm-routing/models) | grok-4.2-beta | $2 | $6 | $0.2 | Tiered pricing |
| [ZenMux](https://docs.zenmux.ai) | x-ai/grok-4.2-fast | $2 | $6 | $0.2 | Tiered pricing |
| [Ofox](https://ofox.ai/docs) | x-ai/grok-4.20 | $4 | $12 | $0.4 |  |

Providers are those listed by models.dev. This site has not vetted them one by one; each provider's own page has the binding price.

Prices and specs come from models.dev (MIT licence), updated 2026-11-12. Each provider's name links to its official docs. A provider priced at 0 usually includes the model in a subscription; it is not necessarily a free API.

https://apibook.ai/models/xai/grok-4.20-0309-reasoning/