Grok 4.20 is a reasoning model from SpaceXAI focused on speed and agentic tool calling. The vendor reports the lowest hallucination rate on the market, along with strict prompt adherence for precise, truthful responses. Reasoning can be enabled or disabled through the API.
$0.625market price $1.25
$0.10market price $0.20
$1.25market price $2.50
Throughput is how fast the model writes (tokens per second, higher is better). Time to first token is how long before the answer starts (lower is better).
Share of requests served without a server error. Client errors (4xx) do not count.
Not enough throughput data
Not enough TTFT data
Works with the OpenAI SDK pointed at our base URL. Every parameter is in the API reference.
Tokens processed per day on NagaAI.
Grok 4.20 is a reasoning model from SpaceXAI focused on speed and agentic tool calling. The vendor reports the lowest hallucination rate on the market, along with strict prompt adherence for precise, truthful responses. Reasoning can be enabled or disabled through the API.
On NagaAI, Grok 4.20 costs $0.625 per 1M input tokens and $1.25 per 1M output tokens. You pay only for what you use, with no subscription.
Grok 4.20 reads up to 2M tokens in one request, counting the prompt and the answer together.
Yes. Grok 4.20 can call your functions as tools and can answer in a JSON schema you give it.
It takes text, images and files as input and returns text.
Create an API key, copy the model ID from the top of this page and send requests with the OpenAI or Anthropic SDK pointed at NagaAI. The API section on this page has a ready example.
