Last refreshed 2026-06-15. Next refresh: weekly.
Why use Grok 4.20 on OpenRouter?
OpenRouter offers Grok 4.20 with pay-as-you-go pricing at $1.25/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Grok 4.20 across 2 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: x-ai/grok-4.20x-ai/grok-4.20Request example
x-ai/grok-4.20.Gotchas
- Use provider model ID "x-ai/grok-4.20", not the LLMReference slug "grok-4.20".
Compare Grok 4.20 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| xAI Console | $1.25 | $2.50 |
| OpenRouter | $1.25 | $2.50 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.25 |
| Output tokens | $2.50 |
Capabilities
About Grok 4.20
Grok 4.20 is xAI's February 2026 Grok 4-series model, first previewed under the informal Grok 4.2 beta label. Standard API variants launched around March 10, 2026 as grok-4.20-0309-reasoning and grok-4.20-0309-non-reasoning with a 1M context window.
FAQ
What does Grok 4.20 cost on OpenRouter?
On OpenRouter, Grok 4.20 costs $1.25 per 1M input tokens and $2.5 per 1M output tokens.
What is the context window for Grok 4.20 on OpenRouter?
Grok 4.20 supports a 1m token context window on OpenRouter.
How does OpenRouter compare to other Grok 4.20 providers?
Grok 4.20 is available from 2 providers. The cheapest input pricing is $1.25/1M tokens from xAI Console.
What API model ID do I use for Grok 4.20 on OpenRouter?
Use the model ID x-ai/grok-4.20 when calling OpenRouter's API.
Who created Grok 4.20?
Grok 4.20 was created by xAI as part of the Grok 4 model family.
Is Grok 4.20 open source?
Grok 4.20 is not open source; the seed data lists it as proprietary.