Where is the Rerank v3.5 documentation?

The Rerank v3.5 documentation on OpenRouter includes the Reranking in RAG: How to Fix Bad Retrieval with a Reranker blog post. The quickstart covers API keys and your first request, and the API reference lists every parameter.

How much does Rerank v3.5 cost?

Rerank v3.5 costs $0.002/search.

How much text can Rerank v3.5 process at once?

Rerank v3.5 accepts up to 4,096 tokens per query and document. Longer text has to be split into multiple documents.

What inputs and outputs does Rerank v3.5 support?

Rerank v3.5 accepts text as input and returns relevance-ranked documents.

Which providers serve Rerank v3.5?

Rerank v3.5 is served by 2 providers on OpenRouter: Amazon Bedrock and Cohere. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

When was Rerank v3.5 released?

Rerank v3.5 was released on April 5, 2026.

Cohere: Rerank v3.5

cohere/rerank-v3.5

Rerank v3.5 is designed to reorder search results for improved relevance. It supports multi-aspect and semi-structured data reranking over 100+ languages. Ideal for refining results from semantic or keyword search pipelines.

Modalities

Price

$0.002/search

Context

Released

Apr 5, 2026

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick: Balanced (price + speed), Nitro (fastest), or Floor (cheapest).

Latency


$0.001	0.30s	100.00%
$0.002	0.25s	100.00%
$0.002	0.43s	100.00%

Search $0.001
0.30s latency100.00% uptime
Search $0.002
0.25s latency100.00% uptime
Search $0.002
0.43s latency100.00% uptime

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Weighted average

Input

$0/M tokens

Output

$0/M tokens

Rerank v3.5 — Price history

Price history

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Effective in $0.00Effective out $0.00
Token share —
Effective in $0.00Effective out $0.00
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Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)

100.00%

Availability (3d)

99.98%

Availability over the last 3 days

Last 72 hours

Availability 99.98%

3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability

100.00%

Without Routing

99.99%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

Available through EU in-region routing

Cohere: Rerank v3.5 is available through EU in-region routing. Requests sent to eu.openrouter.ai are decrypted in the EU and routed only to shared provider endpoints in Europe (the EU/EEA, the UK, and Switzerland).

Providers in Europe

Amazon Bedrock

Prices in Europe

Amazon Bedrock: $0.002/search

Base URL

https://eu.openrouter.ai/api/v1

Plan

Requires Business or Enterprise. Self-serve on Business: no contract, no monthly minimum. OpenRouter Business for EU in-region routing

Fails closed: if no shared provider endpoint in Europe is available, the request errors instead of leaving the region. Requests served by your own BYOK key go to your deployment’s region, which you control. In-region routing docs

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