xAI: Grok 4.6
Grok 4.6 is a reasoning model from xAI released on Aug 10, 2026. It reads text, images and files and writes text, with a 500K token context window and up to 500K tokens per reply.
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It costs $2 per million input tokens and $6 per million output tokens. Cached input bills at $0.50, 75% less than fresh input.
It supports tool calling, structured JSON output and prompt caching.
29 providers serve it, including Azure, OCI Generative AI and Vercel AI Gateway.
- Modalities
- In / out price
- $2 / $6 per 1M
- Context
- 500K
- Max output
- 500K
- Released
- Aug 10, 2026
- Knowledge cutoff
- Feb 2026
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Grok 4.6 pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $2 / 1M tokens | |
|---|---|---|
| Output | $6 / 1M tokens | |
| Cached input (read) | $0.50 / 1M tokens | 75% off input |
| Prompts over 200K | $4 in, $12 out | long context rate |
| Prompts over 200K | $4 in, $12 out | long context rate |
Grok 4.6 providers
29 providers serve it, including Azure, OCI Generative AI and Vercel AI Gateway. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| xAI First party | $2 | $6 | $0.50 | 500K | 500K |
| Azure | $2 | $6 | $0.50 | 200K | 128K |
| OCI Generative AI | $2 | $6 | $0.50 | 500K | 500K |
| Vercel AI Gateway | $2 | $6 | $0.50 | 500K | 500K |
| Vertex | $2 | $6 | $0.50 | 524K | 500K |
| Amazon Bedrock | $2.20 | $6.60 | $0.55 | 500K | 500K |
| 302.AI | $2 | $6 | – | 500K | 500K |
| Abacus | $2 | $6 | $0.50 | 500K | 33K |
| AIHubMix | $2 | $6 | $0.50 | 500K | 500K |
| Cloudflare AI Gateway | $2 | $6 | $0.50 | 500K | 500K |
| CrossModel | $2 | $6 | $0.50 | 500K | 500K |
| DevPass (LLM Gateway) | $2 | $6 | $0.50 | 500K | 500K |
Showing 12 of 29 providers: the lab first, then the major clouds, then the cheapest resellers.
What Grok 4.6 costs per month
Pick a workload close to yours or type your own volumes.
Independent benchmarks
Measured by third parties, not reported by xAI. Each links to its source and shows the date I checked it.
Agentic coding in a real terminal: can the model, driving an agent harness, finish multi step software and ops tasks. Resolution rate.
Terminal-Bench, checked Oct 10, 2026
Abstract reasoning on visual puzzles the model has not seen, semi private set. Hard to memorise, so it tracks reasoning more than knowledge.
ARC Prize, checked Oct 10, 2026
Benchmarks xAI reports (10)
- aa-intelligence-index (Artificial Analysis Intelligence Index, Grok 4.6 High, as reported by xAI)61
- gdpval-aa-v2 (GDPVal-AA v2, Grok 4.6 High)1753
- cursorbench-3.2 (CursorBench v3.2)69.9%
- deepswe-v1.1 (DeepSWE v1.1, Grok 4.6 High)65.9%
- frontiercode-v1.1 (FrontierCode v1.1 (Extended))61.3%
- apex-agents (APEX-Agents)57.5%
- terminal-bench-3.0 (Terminal-Bench v3.0)26%
- apex-swe (APEX-SWE)56.4%
- aa-briefcase (AA-Briefcase (version not stated))1577
- harvey-legal-agent (Harvey LAB (Vals))15.8%
Labs pick their own settings and harnesses, so compare these only within one lab.
Supported request parameters
What you can set when you call Grok 4.6 through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning - Temperature
temperature
Alternatives to Grok 4.6
Models that take the same inputs and call tools, closest in price, cheaper ones first.
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- Index 14.2
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by mistralaiApr 29, 2026262K context$1.50/M input tokens$7.50/M output tokens18 providers
- 992K context
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by qwenSep 2, 2026$2/M input tokens$6/M output tokens5 providers
- Index 48.1
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 13 providers.
by metaSep 2, 20261.05M context$1.25/M input tokens$4.25/M output tokens13 providers
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Grok 4.6 questions
How much does the Grok 4.6 API cost?
$2 per million input tokens and $6 per million output tokens, with cached input at $0.50. Prompts over 200K tokens bill at $4 input and $12 output. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Grok 4.6?
500,000 tokens of input, and it can write up to 500,000 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Grok 4.6?
29 providers serve it, including Azure, OCI Generative AI and Vercel AI Gateway. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Grok 4.6 support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Grok 4.6 open source?
No. xAI serves it through an API only, so you cannot download the weights or host it yourself.
When was Grok 4.6 released?
Aug 10, 2026, with training data up to Feb 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. Independent scores from my hand checked rankings, sources linked above. The summary is written from these facts.
Building on Grok 4.6?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
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