Overview
Claude Opus 4.5 vs DeepSeek V3.1 Terminus: side-by-side summary
Claude Opus 4.5 and DeepSeek V3.1 Terminus are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Claude Opus 4.5, from Anthropic, has a 200,000-token context window and is priced at $5/M tokens input, $25/M tokens output on OpenRouter.
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.
- Context window
- Claude Opus 4.5: 200,000 tokens
- DeepSeek V3.1 Terminus: 163,840 tokens
- Price
- Claude Opus 4.5: $5/M tokens input, $25/M tokens output
- DeepSeek V3.1 Terminus: $0.27/M tokens input, $1/M tokens output
- Provided by
- Claude Opus 4.5: Anthropic
- DeepSeek V3.1 Terminus: DeepSeek