Claude Opus 5.5 vs GPT-6.1 Sol: price, context and capabilities
Claude Opus 5.5 (claude-opus-5-5) and GPT-6.1 Sol (gpt-6.1-sol) side by side, from XiaoZhan AIhub's live catalogue: prices, context window and capabilities. Both are called with the same API key.
| Claude Opus 5.5 | GPT-6.1 Sol | |
|---|---|---|
| Model ID | claude-opus-5-5 | gpt-6.1-sol |
| Vendor | Anthropic | OpenAI |
| Category | Text generation | Text generation |
| Context window | 1M | 1.05M |
| Price | Input 0.9706Credits/K1.6176Credits· | Input 0.2426Credits/K0.8088Credits· |
| Image input | ||
| Web search | ||
| Tool calling | ||
| Reasoning | ||
| JSON mode | ||
| Open weights | ||
| Protocols | OpenAI Chat Completions · Anthropic Messages | OpenAI Chat Completions · OpenAI Responses |
Key differences
- GPT-6.1 Sol costs less per input token (about 2× cheaper than Claude Opus 5.5).
- GPT-6.1 Sol costs less per output token.
- GPT-6.1 Sol has the longer context window (1.05M vs 1M tokens).
- Only GPT-6.1 Sol supports image generation.
Claude Opus 5.5
Anthropic Opus 5.5, the successor to Opus 5. 1M context, stronger at long-horizon agentic coding and knowledge work. Supports the OpenAI Chat and Anthropic Messages protocols.
Prices, examples and API →
GPT-6.1 Sol
OpenAI GPT-6.1 Sol: close to GPT-6 Astra on complex coding, computer use and professional work at a lower price. 1.05M context, adjustable reasoning effort, with web search and image generation ready to use; very long prompts are priced in a separate tier.
Prices, examples and API →
FAQ
- Can I call Claude Opus 5.5 and GPT-6.1 Sol with the same API key?
- Yes. Create one API key on XiaoZhan AIhub, set your SDK's base_url to https://api.dflop.top/v1, and switch between them by putting claude-opus-5-5 or gpt-6.1-sol in the model field.
- How are Claude Opus 5.5 and GPT-6.1 Sol billed?
- Each is billed by its own pricing (see the price row above); prices are in credits, 60 credits = ¥1. Failed requests are not charged.