o1 vs Claude 3 Opus
Pricing, context window, and benchmark comparison · Last updated April 2026
Claude 3 Opus is cheaper than o1 at $15.00/1M/1M vs $15.00/1M/1M input tokens. o1 scores higher on quality benchmarks (ELO 1350). Choose Claude 3 Opus for cost-sensitive workloads; choose o1 for maximum quality.
Which is cheaper: o1 or Claude 3 Opus?
o1 and Claude 3 Opus are identically priced at $15.00/1M per 1M input tokens. Output pricing follows a similar pattern: o1 charges $60.00/1M/1M vs $75.00/1M/1M for Claude 3 Opus.
Which has better quality: o1 or Claude 3 Opus?
Based on LMSYS Chatbot Arena rankings, o1 achieves a higher ELO score (1350 vs 1249), suggesting stronger performance on open-ended tasks. o1 excels at best-in-class reasoning on complex problems. Claude 3 Opus is known for best claude model for creative writing.
Which should you choose: o1 or Claude 3 Opus?
- → Best-in-class reasoning on complex problems
- → Exceptional at math, science, and formal logic
- → Large 200K context window
- → Best Claude model for creative writing
- → 200K context window
- → Deep, thoughtful long-form analysis
Frequently Asked Questions
Which is cheaper: o1 or Claude 3 Opus?
o1 and Claude 3 Opus have the same input price of $15.00/1M per 1M tokens.
Which has better quality: o1 or Claude 3 Opus?
o1 scores higher on the LMSYS Chatbot Arena with an ELO of 1350, suggesting better overall quality for most tasks.
Which has a larger context window: o1 or Claude 3 Opus?
Both o1 and Claude 3 Opus have the same context window.
Should I choose o1 or Claude 3 Opus?
Choose Claude 3 Opus if cost is the priority. Choose o1 if benchmark quality is most important. Consider your specific use case: o1 is best for reasoning and math, while Claude 3 Opus excels at creative-writing and research.
Is o1 or Claude 3 Opus open source?
o1 is proprietary. Claude 3 Opus is proprietary.