Cohere Rerank v4.0 vs GPT-5

Pick two tools from the same category to compare side-by-side.

	Cohere Rerank v4.0 Cohere's current-generation reranking models (Pro and Fast variants) for boosting retrieval relevance in RAG and agent search.	GPT-5 OpenAI's frontier model; broad capability, strong tool use.
Category	model	model
Vendor type	commercial	commercial
Pricing	usage	usage
Strengths	+ Purpose-built second-stage reranking improves precision of any retriever + Multilingual and handles semi-structured JSON documents + Pro/Fast split lets builders trade quality against latency and throughput	+ First-class integration with OpenAI Agents SDK and Codex CLI + Broad ecosystem of tooling and integrations
Tradeoffs	− API-only (no open weights) − Adds an extra network hop and per-query cost to the retrieval pipeline	− Lock-in to OpenAI platform features (e.g., Responses API)
Used in stacks	0	0