Claude Opus 4.5 vs GPT-5.5
Full comparison on pricing, capabilities, and context length — pick the right model for your use case
Claude Opus 4.5
The previous-generation Opus flagship — still a top choice for ultra-long context and complex reasoning. A solid option if your workload needs maximum analytical depth and cost is not a concern.
Input
0.714 金币
Output
3.571 金币
GPT-5.5
OpenAI's flagship model, surpassing the GPT-4 family across the board. Stronger reasoning, faster response, native multimodal input. An all-purpose choice for everyday chat and creative generation.
Input
0.714 金币
Output
4.286 金币
Which should I choose?
💰 Budget priority
Claude Opus 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
GPT-5.5 has the larger context window (400K). 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 Opus 4.5 and GPT-5.5?
A: Claude Opus 4.5 (Anthropic) and GPT-5.5 (OpenAI) each have their own strengths in pricing, context length, and capability. Claude Opus 4.5: input $0.714 金币/M, context 200K. GPT-5.5: input $0.714 金币/M, context 400K. Choose based on your task profile and budget.
Q: Which is cheaper — Claude Opus 4.5 or GPT-5.5?
A: By output price: Claude Opus 4.5 is cheaper ($3.571 金币/M).
Q: Can I use Claude Opus 4.5 and GPT-5.5 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 Opus 4.5 or GPT-5.5?
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.