Claude Sonnet 4.5 vs Claude Haiku 4.5
Full comparison on pricing, capabilities, and context length — pick the right model for your use case
Claude Sonnet 4.5
The previous-generation Sonnet flagship — excellent coding and agent capabilities. A great fit for teams with tight budgets that still need high-quality code output; the industry benchmark before 4.6.
Input
0.429 金币
Output
2.143 金币
Claude Haiku 4.5
Anthropic's lightweight model — extremely fast and affordable, with performance approaching the previous-generation Sonnet. Well-suited for high-volume, low-latency scenarios.
Input
0.143 金币
Output
0.714 金币
Which should I choose?
💰 Budget priority
Claude Haiku 4.5 is cheaper on output pricing. For output-heavy workloads (code generation, content creation), the price gap materially affects monthly cost.
📚 Long documents / large context
Claude Haiku 4.5 has the larger context window (200K). Pick it for large codebases, long-form novels, or legal contracts.
💡 Hands-on recommendation
Sign up for PioModel to call both models with a single API key — just swap the `model` parameter. A $2 top-up is more than enough for side-by-side evaluation.
Frequently asked questions
Q: What's the difference between Claude Sonnet 4.5 and Claude Haiku 4.5?
A: Claude Sonnet 4.5 (Anthropic) and Claude Haiku 4.5 (Anthropic) each have their own strengths in pricing, context length, and capability. Claude Sonnet 4.5: input $0.429 金币/M, context 200K. Claude Haiku 4.5: input $0.143 金币/M, context 200K. Choose based on your task profile and budget.
Q: Which is cheaper — Claude Sonnet 4.5 or Claude Haiku 4.5?
A: By output price: Claude Haiku 4.5 is cheaper ($0.714 金币/M).
Q: Can I use Claude Sonnet 4.5 and Claude Haiku 4.5 together?
A: Yes. With PioModel, a single API key works across all supported models — just switch the `model` parameter in your code, no separate account required. Ideal for apps that need different models for different scenarios.
Q: Which is better for coding — Claude Sonnet 4.5 or Claude Haiku 4.5?
A: Check the capability table above for each model's support. Claude Sonnet is widely regarded as the strongest coding model, GPT-5 is well-rounded, and DeepSeek offers standout value. We recommend trying both before committing.
One account, both models
Free trial credits on signup. Switch models by changing one line of code.