xAI: Grok Code Fast 1✓ Catalog verified
Grok Code Fast 1 is a speedy and economical reasoning model that excels at agentic coding. With reasoning traces visible in the response, developers can steer Grok Code for high-quality work flows.
Overview
Grok Code Fast 1 is a speedy and economical reasoning model that excels at agentic coding. With reasoning traces visible in the response, developers can steer Grok Code for high-quality work flows.
Access: available through the official X Ai API. Context window: 256K.
Specifications
| API identifier | x-ai/grok-code-fast-1 |
| Provider | X Ai |
| Model type | Text LLM |
| Context window | 256K catalog |
| Input modalities | text |
| Output modalities | text |
| Released | Aug 26, 2025 |
| Tokenizer | Grok |
| Moderated | No |
| Architecture modality | text->text |
Pricing
Live pricing components for x-ai/grok-code-fast-1 as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $2e-7 | $0.20 / 1M | Per input token |
| Completion tokens | $0.0000015 | $1.50 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | N/A | N/A | Per image unit |
| Web search fee | $0.005 | $0.005000 | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$0.4Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | Not advertised | Image and document analysis support |
| Audio Processing | Not advertised | Speech and voice aligned flows |
| Tool Calling | ✓ Supported | Supports tools / function calling |
| Self-Hosting | Not advertised | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call xAI: Grok Code Fast 1 through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="x-ai/grok-code-fast-1",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| AI21: Jamba Large 1.7 | AI21 | 256K | $2.00 | View → |
| Cohere: Command A | Cohere | 256K | $2.50 | View → |
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does xAI: Grok Code Fast 1 cost?
$0.20 per 1M input tokens and $1.50 per 1M output tokens on the official X Ai API.
What is the context window of xAI: Grok Code Fast 1?
xAI: Grok Code Fast 1 supports up to 256K tokens of context.
Does xAI: Grok Code Fast 1 support tool / function calling?
Yes, xAI: Grok Code Fast 1 supports tool / function calling — you can register tools and the model will emit structured tool calls.
How do I access xAI: Grok Code Fast 1?
Use the official X Ai API with the model id `x-ai/grok-code-fast-1`. See the Quick start section above for code examples.