Claude Sonnet 4.6 vs Claude 3 Opus
Pricing, context window, and benchmark comparison · Last updated April 2026
Claude Sonnet 4.6 is cheaper than Claude 3 Opus at $3.00/1M/1M vs $15.00/1M/1M input tokens — a 5.0x cost difference. Claude Sonnet 4.6 scores higher on quality benchmarks (ELO 1310). Choose Claude Sonnet 4.6 for cost-sensitive workloads; both are strong choices depending on your budget.
Which is cheaper: Claude Sonnet 4.6 or Claude 3 Opus?
Claude Sonnet 4.6 is the cheaper option at $3.00/1M per 1M input tokens, compared to $15.00/1M for Claude 3 Opus. That is a 5.0x cost difference on input tokens. Output pricing follows a similar pattern: Claude Sonnet 4.6 charges $15.00/1M/1M vs $75.00/1M/1M for Claude 3 Opus.
Which has better quality: Claude Sonnet 4.6 or Claude 3 Opus?
Based on LMSYS Chatbot Arena rankings, Claude Sonnet 4.6 achieves a higher ELO score (1310 vs 1249), suggesting stronger performance on open-ended tasks. Claude Sonnet 4.6 excels at latest claude model with improved agentic capabilities. Claude 3 Opus is known for best claude model for creative writing.
Which should you choose: Claude Sonnet 4.6 or Claude 3 Opus?
- → Latest Claude model with improved agentic capabilities
- → Better at multi-step autonomous workflows
- → 200K context window
- → Best Claude model for creative writing
- → 200K context window
- → Deep, thoughtful long-form analysis
Frequently Asked Questions
Which is cheaper: Claude Sonnet 4.6 or Claude 3 Opus?
Claude Sonnet 4.6 is cheaper at $3.00/1M per 1M input tokens, making it 5.0x more affordable.
Which has better quality: Claude Sonnet 4.6 or Claude 3 Opus?
Claude Sonnet 4.6 scores higher on the LMSYS Chatbot Arena with an ELO of 1310, suggesting better overall quality for most tasks.
Which has a larger context window: Claude Sonnet 4.6 or Claude 3 Opus?
Both Claude Sonnet 4.6 and Claude 3 Opus have the same context window.
Should I choose Claude Sonnet 4.6 or Claude 3 Opus?
Choose Claude Sonnet 4.6 if cost is the priority. Choose Claude Sonnet 4.6 if benchmark quality is most important. Consider your specific use case: Claude Sonnet 4.6 is best for coding and function-calling, while Claude 3 Opus excels at creative-writing and research.
Is Claude Sonnet 4.6 or Claude 3 Opus open source?
Claude Sonnet 4.6 is proprietary. Claude 3 Opus is proprietary.