Model detail
Grok 3
Grok 3 is the latest model from xAI. It's their flagship model that excels at enterprise use cases like data extraction, coding, and text summarization. Possesses deep domain knowledge in finance, healthcare, law, and science.
Model specs
- Model ID
-
grok-3
- Context length
- 131.072K
- Max output
- 131.072K
- I/O modalities
- Released
- 2025-06
02
API endpoints
One MixRoute gateway, OpenAI-compatible
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OpenAI-compatible
/v1/chat/completionsPOST
03
Pricing
Flat rate, unit: /1M Tokens
Input
$3.0000 /1M Tokens
Completion
$15.0000 /1M Tokens
Cache read
$0.7500 /1M Tokens
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Selection summary
Quickly judge whether it fits your workload
What is this model good for?
Latest model from xAI
Grok 3 is the latest model from xAI. It's their flagship model that excels at enterprise use cases like data extraction, coding, and text summarization. Possesses deep domain knowledge in finance, healthcare, law, and science.
What should you check before using it?
131,072 context, 131,072 output tokens
xAI model that supports tool calling and structured output. Knowledge cutoff: 2025-02. Released 2025-06-10.
Why use it through MixRoute?
Grok 3 runs tools and structured output here
Tool calling and structured output run on that route as well. MixRoute serves Grok 3 on the OpenAI-compatible endpoint /v1/chat/completions; point your existing client at https://api.mixroute.ai/v1 with the model ID grok-3 and re-run your integration tests.
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Capabilities & compatibility
Unconfirmed capabilities stay "Unknown," no guesses
Tool calling
Grok 3 supports function and tool calls.
tools definition; the response returns tool_calls to execute and feed results back.
Structured output
Grok 3 can produce JSON-formatted output on demand.
response_format: { type: "json_schema" } forces valid JSON output.
Streaming
Grok 3 supports streamed responses.
stream: true streams tokens incrementally, so chat UIs render as they arrive.
Prompt caching
Grok 3 supports prompt caching under supported routing conditions.
OpenAI SDK
Call Grok 3 through MixRoute's OpenAI-compatible endpoint.
base_url to https://api.mixroute.ai/v1; everything else follows the OpenAI style.
08
Token cost estimator
Live estimate from this page's pricing, not an actual bill
Share of the same prefix read repeatedly, up to 100%
09
FAQ
Grok 3 is billed per use and the record publishes no free-tier allowance. The current published rates are input $3.0000 per 1M tokens and output $15.0000 per 1M tokens. Trial credit or promotional quota is tied to your account rather than to the model, so check the console before planning around a free tier.
One endpoint, a testable decision
Test this model and alternate routes with the same request format
Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.