xAI
Grok Code Fast 1
Grok Code Fast 1 is a reasoning model by xAI with function calling — designed for complex, multi-step problem solving where accuracy matters more than speed. It supports a 256K token context window with up to 256K tokens of output. Priced at $0.2 per million input tokens and $1.5 per million output tokens, it is one of the most cost-efficient options in its class. Access Grok Code Fast 1 through Inworld Router with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.
→Function CallingReasoningreasoningCapability
Step 1 — Create Router
curl --location 'https://api.inworld.ai/router/v1/routers' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
"name": "compare-frontier-models",
"defaultRoute": {
"route_id": "default",
"variants": [
{
"variant": {
"variant_id": "xai/grok-code-fast-1-a",
"model_id": "xai/grok-code-fast-1"
},
"weight": 33
},
{
"variant": {
"variant_id": "xai/grok-3-b",
"model_id": "xai/grok-3"
},
"weight": 33
},
{
"variant": {
"variant_id": "xai/grok-3-beta-c",
"model_id": "xai/grok-3-beta"
},
"weight": 34
}
]
}
}'Step 2 — Chat Completion
curl --location 'https://api.inworld.ai/v1/chat/completions' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
"model": "inworld/compare-frontier-models",
"messages": [{"role": "user", "content": "Hello!"}]
}'Grok Code Fast 1 pricing and providers
Access Grok Code Fast 1 through xAI via Inworld Router or Realtime API. By using the AI provider(s) below you acknowledge you reviewed and agree to their terms listed in the Legal section under the AI provider's name.
| Capabilities | Input modalities | Output modalities | |||||
|---|---|---|---|---|---|---|---|
| xAI | 256K | 256K | $0.20 | $1.50 |
Other xAI models available through Inworld
Compare Grok Code Fast 1 with other xAI models available through Inworld Router or Realtime API.
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