ActionCohereUpdated June 2026

How do I rerank RAG candidates with Cohere?

Short answer: Drop the "CohereRerank" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

FieldTypeRequiredDescription
Query
query
stringRequiredThe search query to rank documents against
Documents (JSON array)
documents
arrayRequiredArray of text strings to rerank
Model
model
optionsOptionalModel. Options: Rerank v3.5 (latest), Rerank English v3, Rerank Multilingual v3
Top N
top_n
stringOptionalNumber of most relevant documents to return
Sample request
{
"query": "e.g. What is the refund policy?",
"documents": "{{trigger.documents}}",
"model": "{{trigger.model}}",
"top_n": "e.g. 3"
}
Returns
{
"results": [
{
"index": 2,
"document": {
"text": "Returns accepted within 30 days..."
},
"relevance_score": 0.98
},
{
"index": 0,
"document": {
"text": "Our refund policy allows..."
},
"relevance_score": 0.85
}
]
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for Rerank.

Any of these apps can fire this action as part of a workflow.

FAQ

Questions about Rerank.

What does the Rerank action do in Cohere?
Reranks a list of documents by relevance to a query using Cohere's Rerank model. Essential last-mile step in any serious RAG pipeline; meaningfully lifts precision over vector-only retrieval.
What inputs does Rerank require?
Required: Query, Documents (JSON array). Every input accepts a static value or a variable from any upstream node in your workflow.
Can I use dynamic inputs from earlier workflow nodes?
Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.
What happens if Cohere returns an error?
The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.
Does Rerank support batch operations?
Yes. Run Rerank inside a Loop node to process arrays. Tiny Command handles Cohere's rate limits automatically so you don't have to throttle manually.
More actions

Other Cohere actions.

Action
Chat
Sends a message and gets a response from one of Cohere's Command models. Cohere is known for enterprise-grade chat with strong RAG and grounded-answer features.
Action
Chat with Tools
Chats with Cohere Command models with tool/function calling enabled. Use to let the model fetch data, run actions, or build agents within Cohere's ecosystem.
Action
Create Embeddings
Generates vector embeddings for text using Cohere's embed-v3 model. Supports input_type (search_document, search_query, classification, clustering), which materially improves retrieval quality, so set it correctly.

Send rerank from your workflows.

Triggered by anything in the catalog. Free tier available. No credit card.