xAI · Released Aug 12, 2026Grok 4.6
xAI's frontier model for long-running agents, coding, knowledge work, and visual projects.
- Capability
- 156.6ECI · #19 of 148
- Input
- $2.00per 1M tokens
- Output
- $6.00per 1M tokens
- Context
- 500K500K max output
What it costs
- Input
- $2.00per million tokens
- Output
- $6.00per million tokens
- Cached input
- $0.50per million tokens
- Over 200K tokens
- $4.00 / $12.00input / output per million
- Blended (3:1)
- $3.00pricier than 74% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $7.00 |
| Team assistant25M input + 5M output tokens | $80.00 |
| Production app250M input + 50M output tokens | $800.00 |
Official xAI API price, as listed on models.dev.
Independent benchmarks
#19 of 148 scored models
The shaded band is Epoch AI’s confidence range (154.7–158.9); the tick marks the median scored model.
Scores from Epoch AI, run independently of xAI.
The details
- Lab
- xAI
- Released
- Aug 12, 2026
- Knowledge cutoff
- Feb 1, 2026
- Context window
- 500,000 tokens
- Max output
- 500,000 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- Adjustable effort low · medium · high · xhigh
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Proprietary
- API model ID
grok-4.6on xAI- Availability
- 29 API providerslisted on models.dev
What xAI claims
Published by the lab at launch. Settings vary, so compare these only with care.
| Benchmark | Score | Setting | Source |
|---|---|---|---|
| CursorBench v4.0 | 40.4 | high effort | Source |
| DeepSWE v1.1 | 65.2 | high effort | Source |
| EEBench | 53 | high effort | Source |
| AA-Briefcase v1.1 | 1546 Elo | high effort | Source |
| Terminal-Bench v4.0 | 20.3 | high effort | Source |
| Harvey Legal Agent Benchmark | 15.8 | high effort | Source |
| HealthBench | 48.5 | high effort; professional | Source |
| GDPval | 1605 Elo | high effort | Source |
More from xAI
About Grok 4.6
How much does Grok 4.6 cost?
Grok 4.6 costs $2.00 input / $6.00 output per million tokens (official xAI API price). Cached input is $0.50 per million tokens. Requests over 200K tokens are billed at $4.00 input / $12.00 output. At a 3:1 input-to-output mix that is $3.00 per million tokens, more expensive than 74% of the 360 priced models we track.
What is the context window of Grok 4.6?
Grok 4.6 accepts up to 500,000 tokens per request and can write up to 500,000 tokens in one response.
How good is Grok 4.6?
Epoch AI gives Grok 4.6 a Capabilities Index score of 156.6 (likely range 154.7–158.9), ranking it #19 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 94.0%, FrontierMath Tiers 1–3 66.0%, OTIS Mock AIME 2024–2025 99.2%, SimpleQA Verified 49.3%.
Is Grok 4.6 open source?
No. Grok 4.6 is proprietary; you use it through xAI’s API or partner platforms.
What inputs does Grok 4.6 support?
Grok 4.6 accepts text and images and replies in text. It is a reasoning model with low, medium, high and xhigh effort settings, supports tool calling and can return structured JSON output.
When was Grok 4.6 released?
xAI released Grok 4.6 on Aug 12, 2026. Its training data runs to Feb 1, 2026.
What are the best alternatives to Grok 4.6?
The closest current models from other labs on capability, price and release date are Qwen3.8 Max (Alibaba (Qwen), ECI 156.6, $2.00 / $6.00), Claude Sonnet 5 (Anthropic, ECI 156.3, $2.00 / $10.00), GLM-5.3 (Z.ai (Zhipu), ECI 155.8, $1.40 / $4.40) and GPT-6 Sol (OpenAI, $2.00 / $10.00).