Analysis
Grok 4.6: what changed for agents and API buyers
Key takeaways
- Grok 4.6 launched August 12, 2026 as SpaceXAI's frontier model for long-running agents, coding, and knowledge work (announcement).
- API list price starts at $2 / $6 per 1M input/output under 200k prompt tokens; $4 / $12 when the prompt is ≥200k (whole request bills at the higher tier).
- Context window: 500k tokens. Model id:
grok-4.6. - Available in Cursor, Grok Build, API, and partners (OpenRouter, Vercel, Cloudflare per launch post).
- Related but separate from Grok Bot and the older Grok chat product.
Pricing table
| Prompt size | Input / 1M | Cached input / 1M | Output / 1M |
|---|---|---|---|
| < 200k tokens | $2.00 | $0.50 | $6.00 |
| ≥ 200k tokens | $4.00 | $1.00 | $12.00 |
Source: docs.x.ai/developers/models/grok-4.6. Last verified: August 2026. Launch post also mentions a faster variant at 2x price.
What to notice as a buyer
- Agent training emphasis: longer trajectories, self-testing, stronger first passes on interactive/visual projects versus 4.5 framing.
- 200k cliff: long agent contexts can silently double bill rates. Cap context or summarize mid-run.
- Benchmarks: SpaceXAI reports parity-class scores with GPT-5.6 Sol on Artificial Analysis Intelligence Index; treat vendor tables as directional, re-check your own tasks.
- Product map: 4.6 is the brain. Bot is the teammate shell. Chat Grok is the consumer assistant.
3 curated tools below.
Cursor Ai
Cursor AI is an AI-first, proprietary code editor built directly as a full fork of Microsoft's open-source Visual Studio Code (VS Code), meaning it natively retains all your favorite VS Code shortcuts, settings, and extensions while completely re-engineering the environment around artificial intelligence.
Grok
Grok is a real-time, live-data AI assistant built into X that is best for news junkies, crypto traders, and creators who need up-to-the-second global trends, unfiltered image generation, and native slide-deck creation.
Grok Bot
Grok Bot is SpaceXAI's early-beta product for always-on AI teammates. Each Bot gets its own cloud computer, signs into the same apps and websites a human would use, finishes multi-step jobs end to end, and only pings you when something needs approval. Teams can run many Bots in parallel, teach workflows by demonstration, and message Bots from desktop or iOS like colleagues.
| Tool | Best for | Pricing | Billing note |
|---|---|---|---|
| Cursor Ai | Code | Freemium | Free Trial |
| Grok | Social Media Assistant | Freemium | Free Trial |
| Grok Bot | AI Agent | Freemium | Free Trial |
Frequently asked questions
Should I switch every workload to 4.6 from 4.5?
Try agentic and coding jobs first. Cached-input pricing differs; measure cost on long sessions before a blanket cutover.
Does Grok Bot require 4.6?
Bot beta rides SpaceXAI's current agent stack. Treat 4.6 as the model generation around the Bot launch week, not a separate Bot SKU.