Claude Sonnet 4.6 vs o3-mini
Pricing, context window, and benchmark comparison · Last updated June 2026
o3-mini is cheaper than Claude Sonnet 4.6 at $1.10/1M vs $3.00/1M input tokens — a 2.7x cost difference. Claude Sonnet 4.6 scores higher on quality benchmarks (ELO 1390). Choose o3-mini for cost-sensitive workloads; choose Claude Sonnet 4.6 for maximum quality.
Which is cheaper: Claude Sonnet 4.6 or o3-mini?
o3-mini is the cheaper option at $1.10/1M per 1M input tokens, compared to $3.00/1M for Claude Sonnet 4.6. That is a 2.7x cost difference on input tokens. Output pricing follows a similar pattern: Claude Sonnet 4.6 charges $15.00/1M vs $4.40/1M for o3-mini.
Which has better quality: Claude Sonnet 4.6 or o3-mini?
Based on LMSYS Chatbot Arena rankings, Claude Sonnet 4.6 achieves a higher ELO score (1390 vs 1340), suggesting stronger performance on open-ended tasks. Claude Sonnet 4.6 excels at best combination of speed and intelligence in the claude family. o3-mini is known for strong reasoning at a low price point.
Which should you choose: Claude Sonnet 4.6 or o3-mini?
- → Best combination of speed and intelligence in the Claude family
- → 1M token context window at standard pricing
- → Extended thinking and adaptive thinking supported
- → Strong reasoning at a low price point
- → 200K context window
- → Three effort levels (low/medium/high) for cost control
Frequently Asked Questions
Which is cheaper: Claude Sonnet 4.6 or o3-mini?
o3-mini is cheaper at $1.10/1M per 1M input tokens, making it 2.7x more affordable.
Which has better quality: Claude Sonnet 4.6 or o3-mini?
Claude Sonnet 4.6 scores higher on the LMSYS Chatbot Arena with an ELO of 1390, suggesting better overall quality for most tasks.
Which has a larger context window: Claude Sonnet 4.6 or o3-mini?
Claude Sonnet 4.6 has a larger context window at 1000K tokens.
Should I choose Claude Sonnet 4.6 or o3-mini?
Choose o3-mini 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 o3-mini excels at reasoning and math.
Is Claude Sonnet 4.6 or o3-mini open source?
Claude Sonnet 4.6 is proprietary. o3-mini is proprietary.