Skip to main content
Grok 4.6 (xAI) is available in Tess for long-running agents, coding, knowledge work, and polished visual/interactive deliverables. It is a post-training upgrade on the Grok 4.5 base — same price, stronger agentic coding.

​
What changed vs Grok 4.5

Native reasoning, tools (function calling, web search, code execution), and image input. Knowledge cutoff: February 2026.

​
Pricing (Tess credits)

Values follow Models and Costs (credits per 100 tokens). Same rate across reasoning levels:
Screenshot placeholder — model picker: Capture the chat model selector with Grok 4.6 (Low / Medium / High) visible.

​
Ideal use cases in Tess

  1. Long-running agents — multi-step research and execution without losing the thread
  2. Agentic coding — codebase changes with +12 pts DeepSWE vs 4.5
  3. Knowledge work on business documents
  4. Interactive prototypes and polished deliverables
  5. Multi-agent setups — High reasoning for the hardest subagents
  6. Long sessions (500K context) without switching models
Best practices
  • Start on Medium; move to High only when the task needs longer tool loops or harder coding.
  • Price matches Grok 4.5 — upgrade the default on existing agents when you want the coding/agent gains at no extra credit cost.
  • Very long prompts on the provider side can cost more; keep context scoped when you can.
See also: Models and Costs · Introducing Grok 4.6 (xAI).