Grok 4.6

x-ai/grok-4.6

x-ai/grok-4.6 on Sylphx Models · 131K of context. One Responses contract, with list prices published per million tokens.

Released: Aug 12, 2026 · 40 days old
Provider: xAI
Context: 131,072 tokens

Open in the playground See a request sample Read the docs

Input $2.00 / MOutput $6.00 / MCached input $0.2 / MFull rate sheet

Context window131,072tokens per request

Max outputNot publishedtokens per response

Input$2.00 / Mper million tokens

Output$6.00 / Mper million tokens

Requests · 7d357metered on Responses

Avg TPM · 7d2.4K24.5M tokens

Pricing

USD per million tokens

Input: $2.00
Output: $6.00
Cached input: $0.2

$3.00 for 750,000 input and 250,000 output tokens.

Assumption: one batch of 750,000 input plus 250,000 output tokens at the published list prices — recompute for your own mix. Blended $3.00 per million at a 3:1 mix.

Chat replies · 3:1 input:output: $3.00 / M
Long documents · 9:1 input:output: $2.40 / M
Heavy output · 1:1 input:output: $4.00 / M
Cache write: Not published
Currency and unit: USD / million tokens

Cached input reads cost 90% less than fresh input tokens.

Full rate sheet and billing rules.

Specification

Context window: 131,072 tokens
Max output: Not published
Input modalities: Not published
Output modalities: Not published
Family: Grok
Version: v4.6
Provider: xAI
Released: Aug 12, 2026 · 40 days old
Model id: x-ai/grok-4.6

Data posture

Standard

Prompts and outputs sent to this model are not used to train models.

Training on what you send: No
Zero Data Retention: Available

Traffic

Daily traffic the platform metered on Responses for this exact model id. Totals are the window they name; a day with no traffic is zero, not missing.

Requests · last 7 days: 357
Tokens · last 7 days: 24.5M
Average TPM · last 7 days: 2.4K
Series total · 14d: 99,728 req · 5.3B tok

14-day total 99,728 · peak 34,984 on Sep 10

Sep 7daily requests, oldest to newestSep 20

Daily numbers for the last 14 days

Daily requests and tokens metered for x-ai/grok-4.6
Day	Requests	Tokens
2026-09-07	5,190	341,366,040
2026-09-08	33,445	1,665,926,885
2026-09-09	13,659	674,212,333
2026-09-10	34,984	1,808,815,999
2026-09-11	11,337	770,382,174
2026-09-12	755	49,471,429
2026-09-13	1	289
2026-09-14	0	0
2026-09-15	0	0
2026-09-16	0	0
2026-09-17	0	0
2026-09-18	0	0
2026-09-19	1	705
2026-09-20	356	24,527,798

POST https://api.models.sylphx.ai/v1/responses

curl https://api.models.sylphx.ai/v1/responses \
  -H "Authorization: Bearer $SYLPHX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "x-ai/grok-4.6",
    "input": "Summarise this incident report in three bullets.",
    "stream": false
  }'

How to call it

Send the official Responses document to the base URL above with your organization key and this exact model id. Streaming arrives as ordered events with one terminal event.

Retries: send an Idempotency-Key and a retry replays the original response instead of billing twice.
Errors: typed envelopes tell you whether to retry, wait, or fix the request.
Keys: mint and revoke organization keys from the console.

Quickstart Responses API Errors and retries

Related models

Derived from this catalog: same provider first, then the same family, then the nearest neighbours by input price and context window.

Similar price and context

Nearest by input price and context window

Independent evaluation

We do not publish benchmark scores for this model — we have not verified any. These external leaderboards run their own tests, so check them against your own workload.

Not our numbers

357 requests metered on x-ai/grok-4.6 over the last seven daysEvery xAI model →