KymaKyma
xAI

xAI

Grok 4.6

xAI's newest flagship. 500K context, vision, file input, reasoning; the rate doubles above 200K prompt tokens.

Modalities

Text+Image → Text

Input

$2.70 /1M

Output

$8.10 /1M

Context

500K

Speed

medium

Below release

Not established

Weights

Not published

Pricing

Pay per token. Cached input bills at this model’s own cached rate, listed below.

$2.70 /1M input$8.10 /1M output
Hobby10 req/day · 2K in / 500 out
~$2.83/mo
Production1,000 req/day · 2K in / 500 out
~$284/mo
Scale20,000 req/day · 2K in / 500 out
~$5,670/mo
+ Estimate your workload
1,000
2,000
500

Estimated monthly cost

$284

$9.45 / day on Grok 4.6

Same workload on:

Grok 4.20 Multi-Agent$159-44%
Grok 4.20$159-44%

Estimates use list pricing. Actual bills depend on real token counts, and every response includes its exact cost.

How it compares

Against the peers people actually weigh it against.

SpecGrok 4.6Grok 4.20 Multi-AgentGrok 4.20
Input /1M$2.70$1.767$1.763
Output /1M$8.10$3.534$3.528
Context500K2M2M
ToolsYesNoYes
ReasoningYesYesYes
Speedmediumslowmedium

Quick start

Up and running in under two minutes.

  1. 1

    Create an API key

    Sign up and grab a key from the dashboard — $0.50 free credit, no card required.

    Get API key →
  2. 2

    Make your first request

    Drop in your key and send a chat completion — fully OpenAI-compatible.

    curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4.6",
    "messages": [
      {"role": "user", "content": "Explain prompt caching in one paragraph."}
    ]
  }'
  3. 3

    Stream responses

    Add "stream": true to receive tokens as they arrive.

    curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4.6",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

FAQ

Common questions about this model.

What is the context window of Grok 4.6?

Grok 4.6 has a 500K-token context window — roughly 735 pages of text in a single request.

How much does the Grok 4.6 API cost?

$2.70 per 1M input tokens and $8.10 per 1M output tokens. No subscription; you pay only for what you use.

Does Grok 4.6 support function calling?

Yes — Grok 4.6 supports tool/function calling and structured outputs (JSON mode), so it works with agent frameworks out of the box.

Are the weights for Grok 4.6 publicly available?

No. xAI does not publish Grok 4.6's weights — it is reachable through an API rather than as a file you can download and run (https://docs.x.ai/developers/release-notes, read 2026-08-14). That is xAI's decision about their own product, not a limitation of Kyma.

Is Grok 4.6 ever served below the precision its creator released it at?

Kyma cannot say, and for this model nobody can. xAI does not publish Grok 4.6's weights, so there is no released checkpoint whose precision a route could be measured against. We publish "not established" rather than reading a low format as a downgrade: on several models in this catalogue a low format is exactly how the creator ships it.

How do I use Grok 4.6?

Kyma is OpenAI-compatible: point your SDK's base URL at https://kymaapi.com/v1, use your Kyma API key, and set the model to grok-4.6. Signing up is free and includes $0.50 of credit — no card required.

Start with $0.50 free credit — no card required.Create account →

More models by xAI

ModelContextInputOutput
xAIGrok 4.5500K$2.73$8.189
xAIGrok Build256K$1.389$2.777
xAIGrok 4.31M$1.92$3.838
xAIGrok 4.202M$1.763$3.528
xAIGrok 4.20 Multi-Agent2M$1.767$3.534