Overview
DeepSeek V3.1 Terminus vs GPT-5.1 Chat: side-by-side summary
DeepSeek V3.1 Terminus and GPT-5.1 Chat are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
DeepSeek V3.1 Terminus, from DeepSeek, has a 163,840-token context window and is priced at $0.27/M tokens input, $1/M tokens output on OpenRouter.
GPT-5.1 Chat, from OpenAI, has a 128,000-token context window and is priced by the provider serving it on OpenRouter.
- Context window
- DeepSeek V3.1 Terminus: 163,840 tokens
- GPT-5.1 Chat: 128,000 tokens
- Price
- DeepSeek V3.1 Terminus: $0.27/M tokens input, $1/M tokens output
- GPT-5.1 Chat: Pricing varies by provider
- Provided by
- DeepSeek V3.1 Terminus: DeepSeek
- GPT-5.1 Chat: OpenAI