Claude Sonnet 4.6 vs Grok 4.5

Price, context and benchmark scores side by side — every number from the live model catalogue.

Claude Sonnet 4.6anthropic Grok 4.5x-ai
Input / 1M tokens $3.00 $2.00
Output / 1M tokens $15.00 $6.00
1M in + 300K out $7.50 $3.80
Context window 1M 500K
Intelligence index 47.2 53.8
Coding index 63.0 72.4
Agentic index 40.8 45.7
Cheapest provider Azure xAI
Providers serving it 4 1
Weights Closed Closed
Image input Yes Yes
Tool calling Yes Yes
Reasoning mode Yes Yes
Released Feb 17, 2026 Jul 8, 2026

Which one to pick

Pick Claude Sonnet 4.6 if…

  • You need the bigger context window (1M).
  • You want provider redundancy: 4 providers serve it.

Pick Grok 4.5 if…

  • You want the higher general-intelligence score (53.8).
  • Code quality is the priority — it leads on the coding index (72.4).
  • You are running agent loops — higher agentic index (45.7).
  • Token cost matters: $6.00 per 1M output vs $15.00.

FAQ

Is Claude Sonnet 4.6 better than Grok 4.5?

Grok 4.5 scores higher on general intelligence (47.2 vs 53.8), while Grok 4.5 is 2.5× cheaper per output token ($6.00 vs $15.00). For code, Grok 4.5 leads (72.4 coding index). Claude Sonnet 4.6 takes the larger context at 1M.

Which is cheaper, Claude Sonnet 4.6 or Grok 4.5?

Grok 4.5, at $6.00 per 1M output tokens versus $15.00. On a 1M input + 300K output workload that is $3.80 against $7.50.

Can I self-host Claude Sonnet 4.6 or Grok 4.5?

Claude Sonnet 4.6: closed weights, API only. Grok 4.5: closed weights, API only.

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