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View on OpenRouter Measuring Autonomous AI Research
We ran 153 autonomous runs across 18 frontier models on the nanoGPT optimizer speedrun.
Elie Bakouch
Grok 4.6
xAI
xAI's frontier Grok model, tuned for long-running agents, coding, knowledge work, and visual projects.
Specs
Model
- Family
- Grok
- Variant
- 4.6
- Weights
- Proprietary
Limits
- Context
- 500,000 tokens
- Max output
- 500,000 tokens
Modalities
- Input
- Text Image PDF
- Output
- Text
Pricing
- Input
- $2 / 1M
- Output
- $6 / 1M
- Cache read
- $0.5 / 1M
Capabilities
- Reasoning
- Yes
- Reasoning control
- Effort levels
- Tool calling
- Yes
- Attachments
- Yes
Dates
- Released
- 12 Aug 2026
- Knowledge cutoff
- 1 Feb 2026
Articles
All articlesprimeintellect.ai
Grok 4.6 – A field guide
Grok 4.6 is out! I've used it for a few weeks as my daily driver across the normal mix of coding and knowledge work, and built a few projects with it specifically to push on where it holds up.
eric zakariasson@ericzakariasson
Introducing Grok 4.6
Grok 4.6 builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work.
xAI