Grok 4.20 (Reasoning): API pricing, providers and specs
Grok 4.20 (Reasoning) is a text model by xAI. 16 providers serve it, from $2 to $12 /1M; the lowest price is at APIMart.
How Grok 4.20 (Reasoning) compares
Against the 737 text models on the site priced the same way.
- Mid-priced: its lowest price is $2 /1M against a median of $1.10; 62% of comparable models cost less.
- Its 1M-token context window is larger than 67% of them (median 262K), about 1500 pages of text.
- 16 providers serve it; 85% of comparable models have fewer.
Grok 4.20 (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.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| APIMart | $1/1M | $2/1M | — | — |
 CometAPI | $1/1M | $2/1M | $0.16/1M | — |
| xAIOfficial | $1.25/1M | From$2.50/1M | $0.20/1M | 1M |
 Vertex | $1.25/1M | From$2.50/1M | $0.20/1M | — |
| Vercel AI Gateway | $1.25/1M | From$2.50/1M | $0.20/1M | 2M |
 Impossibl | $1.25/1M | From$2.50/1M | $0.20/1M | — |
| OpenRouter | $1.25/1M | From$2.50/1M | $0.20/1M | 2M |
| DevPass (LLM Gateway) | $1.25/1M | From$2.50/1M | $0.20/1M | — |
 APIYI | $1.25/1M | $2.50/1M | — | — |
 LaoZhang API | $1.25/1M | $2.50/1M | — | — |
 Azure | $1.25/1M | From$2.50/1M | — | — |
 Venice AI | $1.42/1M | $2.83/1M | $0.23/1M | — |
 Jiekou.AI | $1.90/1M | $5.70/1M | — | — |
| ZenMux | $2/1M | From$6/1M | $0.20/1M | 2M |
 Requesty | $2/1M | From$6/1M | $0.20/1M | 2M |
 Ofox | $4/1M | $12/1M | $0.40/1M | 2M |
- APIMart$2
- CometAPI$2
- APIYI$2.50
- LaoZhang API$2.50
- xAIOfficialFrom$2.50
- VertexFrom$2.50
- Vercel AI GatewayFrom$2.50
- ImpossiblFrom$2.50
- OpenRouterFrom$2.50
- DevPass (LLM Gateway)From$2.50
- AzureFrom$2.50
- Venice AI$2.83
Specs
- Type
- Text
- Maker
- xAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 1M≈ 1500 pages of text
- Max output
- 128K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- Mar 10, 2026
- License
- —
- Open weights
- —
Alternatives to Grok 4.20 (Reasoning)
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Grok 4.20 (Reasoning)this model | $2/1M | 1M | — | 16 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
 Gemini 3 Flash | $2.40/1M | 1.05M | 1466 | 5 |
 Mistral Large 4 | $2.09/1M | 1.05M | 1543 | 13 |
 Muse Spark 1.3 | $4.25/1M | 1.05M | 1657 | 11 |
 Sonar | $1/1M | 127K | — | 9 |
| GLM-5.2 | $1.80/1M | 1M | 1604 | 44 |
| Gemini 3.8 Flash | $3/1M | 1.05M | 1585 | 30 |
More from xAI
Grok 4.20 (Reasoning) FAQ
APIMart, at $2 /1M. 16 providers serve Grok 4.20 (Reasoning); the table above lists every one with its price.
Grok 4.20 (Reasoning) reads up to 1M tokens per request and writes up to 128K.
We have not found Grok 4.20 (Reasoning)'s weights published by its maker.
16 API providers serve Grok 4.20 (Reasoning). Compare their prices above, or open a provider to see everything it offers.
Can't find what you're looking for? Contact us