Cogito V2 Preview Deepseek 671B vs GPT-5 Nano: side-by-side summary

Cogito V2 Preview Deepseek 671B and GPT-5 Nano are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Cogito V2 Preview Deepseek 671B, from deepcogito, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.

GPT-5 Nano, from OpenAI, has a 400,000-token context window and is priced at $0.05/M tokens input, $0.40/M tokens output on OpenRouter.

Context window

• Cogito V2 Preview Deepseek 671B: 131,072 tokens
• GPT-5 Nano: 400,000 tokens

Price

• Cogito V2 Preview Deepseek 671B: Pricing varies by provider
• GPT-5 Nano: $0.05/M tokens input, $0.40/M tokens output

Provided by

• Cogito V2 Preview Deepseek 671B: deepcogito
• GPT-5 Nano: OpenAI

• Cogito V2 Preview Deepseek 671B model details, providers and pricing
• GPT-5 Nano model details, providers and pricing