Side-by-side pricing, context window, and capabilities — try both on ChatLima.
GPT-5.2 Pro is OpenAI’s most advanced model, offering major improvements in agentic coding and long context performance over GPT-5 Pro. It is optimized for complex tasks that require step-by-step reasoning,...
Image and document understanding
Opus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks. It is built for agents that operate across entire workflows rather than single prompts, making it especially effective...
Image and document understanding
| Feature | OpenAI: GPT-5.2 Pro | Anthropic: Claude Opus 4.6 |
|---|---|---|
| Provider | OpenRouter | OpenRouter |
| Context Length | 400,000 tokens | 1,000,000 tokens |
| Input Price | $21.00/M | $5.00/M |
| Output Price | $168.00/M | $25.00/M |
| Vision Support | Yes | Yes |
| Higher cost | Yes | Yes |
| Capabilities | TextVision | TextVision |