xAI model product
Grok Code Fast 1
Grok Code Fast 1 is an xAI reasoning model for agentic coding, trained on programming-related content and real-world pull requests and coding tasks.
Updated Sep 8, 2026. Default version: Grok Code Fast 1
LLMBoard Score35.4Grok Code Fast 1
Coverage0%1 benchmark families
Context window256KTokens
Official input priceN/AOfficial price unavailable
Grok Code Fast 1 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Grok Code Fast 1 Benchmark Results
Benchmark scores for Grok Code Fast 1.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkSWE-Bench Verified | Score70.80% | Rank60 | Participants113 | Percentile47.32% | EvidenceC | Evaluated |
| BenchmarkLM Arena Webdev | Score1,164.86 rating | Rank95 | Participants97 | Percentile2.08% | EvidenceA | Evaluated |
Grok Code Fast 1 Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenawebdev | Categorywebdev-html | Rank94 | Rating / score1,172.42 | Votes783 | ObservationsN/A | Result date |
| Arenawebdev | Categoryoverall | Rank95 | Rating / score1,164.86 | Votes783 | ObservationsN/A | Result date |
| Arenawebdev | Categorywebdev | Rank95 | Rating / score1,164.86 | Votes783 | ObservationsN/A | Result date |
Grok Code Fast 1 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- From $0.18 input, $1.35 output per 1M via Jiekou.AI
- Tracked offerings
- 7
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderOpenCode Zen | Provider model IDgrok-code | Regionglobal | Input / 1MN/A | Output / 1MN/A | Context256K | Updated |
| ProviderJiekou.AI | Provider model IDgrok-code-fast-1 | Regionglobal | Input / 1M$0.18 | Output / 1M$1.35 | Context256K | Updated |
| ProviderZenMux | Provider model IDx-ai/grok-code-fast-1 | Regionglobal | Input / 1M$0.20 | Output / 1M$1.5 | Context256K | Updated |
| ProviderHelicone | Provider model IDgrok-code-fast-1 | Regionglobal | Input / 1M$0.20 | Output / 1M$1.5 | Context256K | Updated |
| ProviderFrogBot | Provider model IDgrok-code-fast-1 | Regionglobal | Input / 1M$0.20 | Output / 1M$1.5 | Context256K | Updated |
| ProviderPoe | Provider model IDxai/grok-code-fast-1 | Regionglobal | Input / 1M$0.20 | Output / 1M$1.5 | Context256K | Updated |
| ProviderAbacus | Provider model IDgrok-code-fast-1 | Regionglobal | Input / 1M$0.20 | Output / 1M$1.5 | Context256K | Updated |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Grok Code Fast 1 Runtime Performance
Provider-specific output speed and catalog latency for Grok Code Fast 1. Runtime does not affect the capability score.
Sort by
Provider | Output Speed | Catalog Latency | Max Input | Max Output | Updated |
|---|
| ProviderxAI | Output Speed76.41 tok/s | Catalog Latency1.38 s | Max Input256K | Max Output10K | Updated |
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Grok Code Fast 1 Specifications
Technical details for the model's default version.
- Version
- Grok Code Fast 1
- Released
- Aug 28, 2025
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- 256K
- Max output
- 10K
- Inputs
- text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Grok Code Fast 1 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionGrok Code Fast 1 | Released | LLMBoard35.40 | ParametersN/A | Context256K | Max output10K | Open weightsNo | LicenseProprietary |
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What is Grok Code Fast 1?
Key information about Grok Code Fast 1 and its available data.
Grok Code Fast 1 is an LLM from xAI built with a new model architecture and trained for software development workflows. It is designed to use tools such as grep, terminal, and file editing, with particular proficiency in TypeScript, Python, Java, Rust, C++, and Go.
Data as of 2026-09-08.
FAQ
Common questions about Grok Code Fast 1.
When was Grok Code Fast 1 released?
Grok Code Fast 1's default version was released on Aug 28, 2025.
How much does Grok Code Fast 1 cost?
No official standard PAYG price is currently available for Grok Code Fast 1. The lowest tracked third-party offer starts at $0.18 input and $1.35 output via Jiekou.AI.
Who created Grok Code Fast 1?
Grok Code Fast 1 was created by xAI.
What is the context window for Grok Code Fast 1?
The default version has a 256K token context window.
Is Grok Code Fast 1 open weight?
No. The default version is not marked as having publicly available weights.