Claude Opus 4.7 vs Grok 4.20
Pricing, context window, and benchmark comparison · Last updated April 2026
Grok 4.20 is cheaper than Claude Opus 4.7 at $2.00/1M/1M vs $5.00/1M/1M input tokens — a 2.5x cost difference. Claude Opus 4.7 scores higher on quality benchmarks (ELO 1415). Choose Grok 4.20 for cost-sensitive workloads; choose Claude Opus 4.7 for maximum quality.
Which is cheaper: Claude Opus 4.7 or Grok 4.20?
Grok 4.20 is the cheaper option at $2.00/1M per 1M input tokens, compared to $5.00/1M for Claude Opus 4.7. That is a 2.5x cost difference on input tokens. Output pricing follows a similar pattern: Claude Opus 4.7 charges $25.00/1M/1M vs $6.00/1M/1M for Grok 4.20.
Which has better quality: Claude Opus 4.7 or Grok 4.20?
Based on LMSYS Chatbot Arena rankings, Claude Opus 4.7 achieves a higher ELO score (1415 vs 1380), suggesting stronger performance on open-ended tasks. Claude Opus 4.7 excels at step-change improvement in agentic coding over opus 4.6. Grok 4.20 is known for 2m token context window — tied for largest available.
Which should you choose: Claude Opus 4.7 or Grok 4.20?
- → Step-change improvement in agentic coding over Opus 4.6
- → 1M token context window at standard pricing
- → 128K max output tokens
- → 2M token context window — tied for largest available
- → Real-time X (Twitter) data access
- → Strong reasoning and multi-agent variants
Frequently Asked Questions
Which is cheaper: Claude Opus 4.7 or Grok 4.20?
Grok 4.20 is cheaper at $2.00/1M per 1M input tokens, making it 2.5x more affordable.
Which has better quality: Claude Opus 4.7 or Grok 4.20?
Claude Opus 4.7 scores higher on the LMSYS Chatbot Arena with an ELO of 1415, suggesting better overall quality for most tasks.
Which has a larger context window: Claude Opus 4.7 or Grok 4.20?
Grok 4.20 has a larger context window at 2000K tokens.
Should I choose Claude Opus 4.7 or Grok 4.20?
Choose Grok 4.20 if cost is the priority. Choose Claude Opus 4.7 if benchmark quality is most important. Consider your specific use case: Claude Opus 4.7 is best for coding and reasoning, while Grok 4.20 excels at reasoning and research.
Is Claude Opus 4.7 or Grok 4.20 open source?
Claude Opus 4.7 is proprietary. Grok 4.20 is proprietary.