# Grok 4.3 [Canonical model page](https://headlessthrones.com/models/grok-4-3) · [Model library](https://headlessthrones.com/models) Public catalog reference from Headless Thrones. Exact catalog ID: `grok-4-3`. Catalog source-check date: 2026-10-23. This brief contains the public catalog answers and any catalog guide, not private drafts, historical editorial revisions or independently measured rankings. The canonical HTML page may also display separately published editorial. Current catalog answers ## What to know about Grok 4.3 AI-compiled from linked model documentation. This is a catalog reference, not an independent performance review. Catalog checked October 23, 2026. [Exact model](https://headlessthrones.com/models/grok-4-3#model-answer-identity) · [Access](https://headlessthrones.com/models/grok-4-3#model-answer-access) · [Pricing](https://headlessthrones.com/models/grok-4-3#model-answer-pricing) · [Token limits](https://headlessthrones.com/models/grok-4-3#model-answer-context) · [Inputs & outputs](https://headlessthrones.com/models/grok-4-3#model-answer-modalities) · [Model details](https://headlessthrones.com/models/grok-4-3#model-answer-research) ### Which Grok 4.3 does this page describe? Grok 4.3 is a model record from **xAI** in the Grok family. [Source](https://docs.x.ai/developers/models/grok-4.3) The recorded model identifier or checkpoint is `grok-4.3`. Use that exact identifier when checking documentation or a provider listing. [Source](https://docs.x.ai/developers/models/grok-4.3) ### How can you access Grok 4.3? The catalog documents **API** access for Grok 4.3. [Source](https://docs.x.ai/developers/models/grok-4.3) As of the catalog check, this version was listed as available. [Source](https://docs.x.ai/developers/models/grok-4.3) For API use, confirm the exact model identifier, your account and region, and the endpoint's current limits in the linked documentation. An API listing does not establish access through a consumer subscription. ### How much does Grok 4.3 cost? The recorded token rates for Grok 4.3 are: - **Input:** US$1.25 per 1 million input tokens. [Source](https://docs.x.ai/developers/models/grok-4.3) - **Output:** US$2.5 per 1 million output tokens. [Source](https://docs.x.ai/developers/models/grok-4.3) **Rate conditions:** USD per million standard input/output tokens on the direct xAI API. The page warns that requests exceeding 200K context use different rates; these base rates must not be applied to every context size. Cached input, tools and regional deployment can differ. [Source](https://docs.x.ai/developers/models/grok-4.3) **Illustrative arithmetic:** 10,000 input tokens plus 2,000 output tokens would cost US$0.0175 at those recorded rates. This assumes every token is billed at the displayed rate and excludes any cache, batch, tool, storage or tier adjustments; it is not a quote or measured usage. Check the source's pricing conditions before budgeting. A token rate does not state the price of an app subscription or the full cost of running downloaded weights. ### What are Grok 4.3's context and output limits? The documented **context window is 1,000,000 tokens**. [Source](https://docs.x.ai/developers/models/grok-4.3) A separate maximum-output value is not established in this record. The context or input figure should not be used as an output allowance. Context, input and output limits describe different constraints. Do not add the figures together to infer a larger window. Check the endpoint's accounting for conversation history, system instructions, tools, media and generated tokens; a documented maximum is not a guarantee of answer quality or a measured usable capacity. ### What can Grok 4.3 receive and generate? Documented inputs: **text and image**. [Source](https://docs.x.ai/developers/models/grok-4.3) Documented outputs: **text**. [Source](https://docs.x.ai/developers/models/grok-4.3) Input support and output generation are separate capabilities. Reading an image does not establish image generation; a text output listing does not establish speech output. File sizes, formats and media limits depend on the documented implementation. ### What distinguishes Grok 4.3? These details come from the linked publisher material for this model. Reported capabilities and training descriptions are publisher statements, not independent test results. **Integration features**: The exact model page lists function calling and structured outputs. This documents interface support, not a measured reliability score. [Source](https://docs.x.ai/developers/models/grok-4.3) **Batch API**: Supported. This is the exact model detail card’s listed batch support; verify the regional endpoint before deploying. [Source](https://docs.x.ai/developers/models/grok-4.3) **Reasoning settings**: The detailed settings list none, low, medium, high, xhigh, with low as default. [Source](https://docs.x.ai/developers/models/grok-4.3) **Catalog qualifications:** Current vendor documentation uses the SpaceXSI brand. Search/tool access is separate from training knowledge. **Evidence still missing here:** knowledge and training-data cutoffs. Missing documentation is not evidence that a feature is unavailable. Headless Thrones has not independently benchmarked this model for this reference. Evaluate it on representative work before choosing it; these facts do not rank its accuracy, reliability, speed or suitability against another model. Keep the exact version in view ## Other Grok models from xAI. These are separate records in the same publisher family. A shared family name does not establish equal capabilities or interchangeable licenses. ### [Grok 4.20](https://headlessthrones.com/models/grok-4-20-0309-reasoning) API · 1,000,000 context tokens ### [Grok 4.20 (Non-Reasoning)](https://headlessthrones.com/models/grok-4-20-0309-non-reasoning) API · 1,000,000 context tokens ### [Grok 4.20 Multi-Agent Beta](https://headlessthrones.com/models/grok-4-20-multi-agent-0309) API · 1,000,000 context tokens ### [Grok 4.5](https://headlessthrones.com/models/grok-4-5) API · 500,000 context tokens ### [Grok 4.6](https://headlessthrones.com/models/grok-4-6) API · 500,000 context tokens ### [Grok 4.7](https://headlessthrones.com/models/grok-4-7) API · 500,000 context tokens