Claude 3 Haiku vs Claude Sonnet 4.6
Pricing, context window, and benchmark comparison · Last updated April 2026
Claude 3 Haiku is cheaper than Claude Sonnet 4.6 at $0.25/1M/1M vs $3.00/1M/1M input tokens — a 12.0x cost difference. Claude Sonnet 4.6 scores higher on quality benchmarks (ELO 1310). Choose Claude 3 Haiku for cost-sensitive workloads; choose Claude Sonnet 4.6 for maximum quality.
Which is cheaper: Claude 3 Haiku or Claude Sonnet 4.6?
Claude 3 Haiku is the cheaper option at $0.25/1M per 1M input tokens, compared to $3.00/1M for Claude Sonnet 4.6. That is a 12.0x cost difference on input tokens. Output pricing follows a similar pattern: Claude 3 Haiku charges $1.25/1M/1M vs $15.00/1M/1M for Claude Sonnet 4.6.
Which has better quality: Claude 3 Haiku or Claude Sonnet 4.6?
Based on LMSYS Chatbot Arena rankings, Claude Sonnet 4.6 achieves a higher ELO score (1310 vs 1179), suggesting stronger performance on open-ended tasks. Claude 3 Haiku excels at very fast inference speed. Claude Sonnet 4.6 is known for latest claude model with improved agentic capabilities.
Which should you choose: Claude 3 Haiku or Claude Sonnet 4.6?
- → Very fast inference speed
- → Lowest cost in the Claude family
- → 200K context window even at this price
- → Latest Claude model with improved agentic capabilities
- → Better at multi-step autonomous workflows
- → 200K context window
Frequently Asked Questions
Which is cheaper: Claude 3 Haiku or Claude Sonnet 4.6?
Claude 3 Haiku is cheaper at $0.25/1M per 1M input tokens, making it 12.0x more affordable.
Which has better quality: Claude 3 Haiku or Claude Sonnet 4.6?
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 3 Haiku or Claude Sonnet 4.6?
Both Claude 3 Haiku and Claude Sonnet 4.6 have the same context window.
Should I choose Claude 3 Haiku or Claude Sonnet 4.6?
Choose Claude 3 Haiku if cost is the priority. Choose Claude Sonnet 4.6 if benchmark quality is most important. Consider your specific use case: Claude 3 Haiku is best for summarization and customer-support, while Claude Sonnet 4.6 excels at coding and function-calling.
Is Claude 3 Haiku or Claude Sonnet 4.6 open source?
Claude 3 Haiku is proprietary. Claude Sonnet 4.6 is proprietary.