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xAI: x-AI/Grok-Code-Fast 1

Fast Grok model for responsive chat, reasoning, and tool-assisted work

Source-linked grok Closed weights Released 2025-09-02
API record Report
InputT
OutputT
Input price$0.2/M
Output price$1.5/M
Context256K
Max output10K
Providers2
Inference availability

Providers

Provider-specific identifiers, limits, and listed prices per million tokens. Every row links back to the provider's own documentation.

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Providers offering x-AI/Grok-Code-Fast 1
ProviderProvider model IDContextMax outputInputOutputCache readCapabilitiesDocs
Qiniu x-ai/grok-code-fast-1 256K 10K — — — ReasoningTools Docs ↗
Poe xai/grok-code-fast-1 256K 128K $0.2 $1.5 $0.02 ReasoningTools Docs ↗

Capability badges appear only where the provider catalog explicitly lists support. A blank cell means the source is silent, not that the feature is absent.

Listed rates

Price across providers

Input price per million tokens as published by each provider. Bars are drawn from listed rates only — no traffic weighting, since the catalog observes no requests.

Lowest input $0.2/M

Across 1 priced provider

Median input $0.2/M

Midpoint of listed rates

Highest input $0.2/M

Same as the lowest listed rate

Output range $1.5 – $1.5

Per million output tokens

Poe $0.2/MLowest
Cost calculator

Estimate a workload

$0.00
Excludes taxes, non-token charges, and tiered discounts.
Specification

Capabilities

Recorded from the source catalog and provider listings.

✓ Reasoning Yes
✓ Tool calling Yes
× Structured output No
× Attachments No
× Vision input No
× Open weights No
Creator
xAI
Model family
grok
Knowledge cutoff
Not documented
License
Not documented
Release date
2025-09-02
Model ID
xai/grok-code-fast-1
Published evaluations

Benchmarks

Every result stays attached to its source, version, metric and harness. Scores from different versions are never merged, and the profile below plots each benchmark against its own population rather than on a shared scale.

Benchmark registry
No published benchmark results

ModelBench does not infer quality from price, context size, or model name. When a source publishes a comparable result, it appears here with its version and link.

Read the methodology
Catalog activity

Change log

Field-level changes detected between successful source imports.

Full change log
Max Output Tokens256000 → 10000
Price Prompt0.19999999999999998 → 0.2
Public API

Use this record

Fetch the complete source-linked model record. No key, no account, no rate-limited tier.

API documentation
Endpoint
GET https://modelbench.lol/api/v1/models/xai/grok-code-fast-1
curl
curl "https://modelbench.lol/api/v1/models/xai/grok-code-fast-1"
Common questions

Frequently asked questions

Answered directly from the stored record — nothing here is generated beyond the catalog's own fields.

What is x-AI/Grok-Code-Fast 1?

Fast Grok model for responsive chat, reasoning, and tool-assisted work. It is published by xAI and catalogued here from Models.dev.

How much does x-AI/Grok-Code-Fast 1 cost?

Listed input pricing starts at $0.2 per million tokens from Poe.

What is the context length of x-AI/Grok-Code-Fast 1?

x-AI/Grok-Code-Fast 1 accepts up to 256K tokens of context and returns up to 10K output tokens.

Does x-AI/Grok-Code-Fast 1 support tool calling and structured output?

Provider catalogs list support for tool calling, and reasoning.

Which providers serve x-AI/Grok-Code-Fast 1?

2 providers list this model: Qiniu, Poe.

Are the weights for x-AI/Grok-Code-Fast 1 open?

No. This model is served through hosted APIs only.

When was x-AI/Grok-Code-Fast 1 released?

The catalog records a release date of 2025-09-02, last verified Oct 24, 2026.

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