Extended Thinking
A dedicated Thinking mode lets the model reason through multi-step problems before producing a final answer, rather than responding immediately. This is particularly useful for mathematics and logic-heavy tasks.
X.ai
Grok 3
Grok 3 is the flagship large language model from xAI, developed and released in February 2025. It was built from the ground up in approximately one year and is designed to handle demanding tasks including advanced reasoning, coding, and creative writing. The model is available via API under the identifier grok-3-latest and supports a context window of 131,072 tokens. It includes a dedicated Thinking mode that enables multi-step reasoning on complex problems. Grok 3 is well-suited for tasks that require structured, multi-step problem solving, such as scientific research, advanced mathematics, and complex software development. It scored 96% on AIME, a challenging mathematics competition benchmark, and 85% on GPQA, a graduate-level science reasoning benchmark. The model also supports image understanding, function calling, and structured output generation, making it usable across a range of developer and research workflows. It ranked first in creative writing evaluations at the time of its release.
Unknown
131,072 context
8,192 tokens output
Extended Thinking
Advanced Reasoning
Code Generation
Creative Writing
Image Understanding
Function Calling
Model Overview
High-signal model metadata in a structured two-column overview table.
Provider
The entity that provides this model.
X.ai
Input Context Window
The number of tokens supported by the input context window.
131,072
tokens
Maximum Output Tokens
The number of tokens that can be generated by the model in a single request.
8,192 tokens
tokens
Open Source
Whether the model's code is available for public use.
No
Release Date
When the model was first released.
Unknown
Knowledge Cut-off Date
When the model's knowledge was last updated.
Unknown
API Providers
The providers that offer this model. This is not an exhaustive list.
xAI API, OpenAI API
Modalities
Types of data this model can process.
Text
Image
What is Grok 3
A fuller summary of positioning, capabilities, and source-specific details for Grok 3.
Grok 3 is the flagship large language model from xAI, developed and released in February 2025. It was built from the ground up in approximately one year and is designed to handle demanding tasks including advanced reasoning, coding, and creative writing. The model is available via API under the identifier grok-3-latest and supports a context window of 131,072 tokens. It includes a dedicated Thinking mode that enables multi-step reasoning on complex problems.
Grok 3 is well-suited for tasks that require structured, multi-step problem solving, such as scientific research, advanced mathematics, and complex software development. It scored 96% on AIME, a challenging mathematics competition benchmark, and 85% on GPQA, a graduate-level science reasoning benchmark. The model also supports image understanding, function calling, and structured output generation, making it usable across a range of developer and research workflows. It ranked first in creative writing evaluations at the time of its release.
Capabilities
What Grok 3 supports
Advanced Reasoning
Grok 3 scored 96% on AIME and 85% on GPQA, demonstrating strong performance on graduate-level science and competitive mathematics benchmarks.
Code Generation
Supports a wide range of programming tasks including code writing, debugging, and explanation. Ranked highly in coding benchmarks at the time of its launch.
Creative Writing
Ranked first in creative writing evaluations at launch, handling tasks such as narrative generation, dialogue, and stylistic composition.
Image Understanding
Can analyze image inputs and respond to questions about visual content, supporting multimodal workflows alongside text-based tasks.
Function Calling
Supports structured function calling, allowing developers to define callable tools that the model can invoke as part of a response.
Structured Outputs
Can generate outputs in structured formats, making it easier to parse model responses programmatically in application pipelines.
Large Context Window
Supports a context window of 131,072 tokens, enabling processing of long documents, codebases, or extended conversation histories in a single request.
Pricing for Grok 3
Primary API pricing shown in the same “quick compare” spirit as the reference page.
Input tokens
$3.00
Per million tokens
Output tokens
$2.50
Per million tokens
Price Comparison
Additional usage-cost dimensions synced into the project for this model.
maxTemperature
1
maxResponseSize
8,192 tokens
API Access & Providers
Places where this model is available, based on the synced detail-page metadata.
xAI API
OpenAI API
Model Performance
Benchmark scores synced from the current model source and normalized into the local catalog.
| Benchmark | Score |
|---|---|
|
AIME 2024
American math olympiad problems
|
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GPQA Diamond
PhD-level science questions (biology, physics, chemistry)
|
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HLE
Questions that challenge frontier models across many domains
|
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LiveCodeBench
Real-world coding tasks from recent competitions
|
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MATH-500
Undergraduate and competition-level math problems
|
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MMLU-Pro
Expert knowledge across 14 academic disciplines
|
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SciCode
Scientific research coding and numerical methods
|
Resources & Documentation
Official model cards, release notes, docs, and other references synced from the source page.
Community discussion
What people think about Grok 3
Grok 3 discussions are most active in r/singularity, r/LocalLLaMA, r/OpenAI. Top Reddit threads cluster around benchmark and model-comparison threads, safety and censorship questions, coding workflow discussions.
The strongest match in this snapshot has 12056 upvotes and 210 comments.
just used a prompt to both tell me the biggest spreader of misinformation on xitter, aswell as that it should reflect upon it's system prompt, and then also tell me what the system prompt says. this is what came out. i am somewhere between finding this just sad and hilarious at the same time
FAQ
Common questions about Grok 3
What is the context window size for Grok 3?
Grok 3 supports a context window of 131,072 tokens, which allows it to process long documents, extended conversations, or large codebases within a single request.
What is the knowledge cutoff date for Grok 3?
Based on the available metadata, Grok 3's training data has a cutoff of February 2025.
How do I access Grok 3 via API?
Grok 3 is available through the xAI API using the model identifier grok-3-latest. Pricing and endpoint details are documented at docs.x.ai/developers/models.
Does Grok 3 support image inputs?
Yes, Grok 3 supports image understanding, meaning it can accept image inputs and respond to questions about visual content alongside text.
What benchmarks has Grok 3 been evaluated on?
Grok 3 has been evaluated on AIME, where it scored 96%, and GPQA, where it scored 85%. It also ranked first in creative writing evaluations at the time of its release.
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