xAI · Grok
Grok 4.6
xAI's current flagship, recommended for coding and chat, building on Grok 4.5 with more emphasis on long-running agents and interactive or visual work.
Treat this as a migration decision from 4.5, not a new default. Test the long-horizon and visual-work claims on your own task, and note that cached-input pricing is higher than 4.5's even though headline input and output prices are unchanged.
Use it for
- Long-running agentic coding and software engineering
- Turning a broad product idea into a working first version
- Visual and interactive project work
Provider benchmark leadership is not enough reason to migrate a working Grok 4.5 workflow; access, headline pricing and context are unchanged, so the case has to come from the long-horizon and visual claims holding on your own task.
Effort without the jargon
The task is long-running or agentic enough that verification and self-testing behaviour actually change the outcome.
Advanced recordCost, limits, privacy and operations
Grok 4.6 keeps 4.5's headline input and output price and context window, but cached input costs more; use the published table as a planning input, then verify whether the longer-running agent behaviour is worth the migration.
- API cost
- Officially disclosedxAI prices Grok 4.6 in the same two context tiers as 4.5: US$2 input and US$6 output per million tokens below 200,000 tokens, doubling to US$4 and US$12 at or above it. Cached input is more expensive than on 4.5: US$0.50 below 200,000 tokens and US$1.00 at or above it, versus US$0.30 and US$0.60 on Grok 4.5. Tool and other service charges can be separate.
- Context window
- Officially disclosed500,000 tokens
- Maximum output
- Not disclosedNot disclosed in the cited record
- Knowledge cutoff
- Officially disclosed1 February 2026
- Recorded inputs
- Not enumerated in cited record
- Recorded output
- Text
Data handling is a product decision
Officially disclosedxAI says API inputs and outputs are not used for training without permission and are retained for 30 days by default for abuse audit. Team-wide ZDR removes storage but disables stateful features.
Operational constraints
- Current events require search tools; the base model has no live-event access without them.
- Zero Data Retention disables stateful Responses, Files, Collections, Batch and deferred completions.
- The stable and latest aliases can move; use a dated version where workflow consistency requires it.
- The cited record does not enumerate image or other non-text input support for this model, unlike the explicit image note on Grok 4.5.
Unknown means the cited official record does not disclose a safe value. It is not an estimate. Prices are provider list prices in USD where stated and can change before this record's review date.
Keep the evidence separate
xAI calls Grok 4.6 the most intelligent and fastest model it has built, recommended for coding and chat, and says it builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work, showing more self-testing and verification on extended tasks.
No sufficiently useful independent note has been added yet. That absence is not filled with our guess.
No Human Bit result is claimed; use this as evaluation guidance only.
Not scheduled
No Human Bit result is claimed for this model yet.