rerank-2.5 vs Rerank 4 Pro: side-by-side summary

rerank-2.5 and Rerank 4 Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

rerank-2.5, from voyageai, has a 32,000-token context window and is priced at $0.05/M tokens on OpenRouter.

Rerank 4 Pro, from Cohere, has a 32,768-token context window and is priced at $0.0025/search on OpenRouter.

Context window

• rerank-2.5: 32,000 tokens
• Rerank 4 Pro: 32,768 tokens

Price

• rerank-2.5: $0.05/M tokens
• Rerank 4 Pro: $0.0025/search

Provided by

• rerank-2.5: voyageai
• Rerank 4 Pro: Cohere

• rerank-2.5 model details, providers and pricing
• Rerank 4 Pro model details, providers and pricing