---
title: "Pinecone cohere-rerank-3.5 deprecated: 2026-08-31 | Harbyn"
description: "Pinecone cohere-rerank-3.5 deprecated, effective Aug 31, 2026; replacement: cohere-rerank-4-fast."
canonical: "https://harbyn.com/changes/pinecone/2026-07-01-cohere-rerank-3-5-deprecated"
last-updated: 2026-09-29
---

# Pinecone cohere-rerank-3.5 deprecated

Markdown version of <https://harbyn.com/changes/pinecone/2026-07-01-cohere-rerank-3-5-deprecated>.

Deprecation - Pinecone. high severity. In effect. History: recorded after the fact.

The model continues serving requests through August 30, 2026. Beginning August 31, 2026, requests are automatically served by cohere-rerank-4-fast. The replacement returns different relevance scores and may bill multiple units for large requests; the per-unit rate remains $2.00 per 1,000 rerank units.

The deadline passed on Aug 31, 2026.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Pinecone](https://harbyn.com/vendors/pinecone.md) |
| Kind | Deprecation |
| Severity | high |
| Status | In effect |
| Announced | Jul 1, 2026 |
| Effective | Aug 31, 2026 |
| Added to Harbyn | Sep 29, 2026 |
| Lead time | Recorded after the fact: added 29 days after the deadline |
| Model IDs | `cohere-rerank-3.5` |
| Replacement | `cohere-rerank-4-fast` |
| Review | Reviewed by a person, extracted by a model |

## Find it in your code

```sh
npx harbyn scan
```

The scanner reads your repository on your machine and reports every file and line that uses the identifiers above, with the replacement. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://docs.pinecone.io/release-notes> (changelog, fetched 2026-09-29 02:31 UTC, sha256 `0d85684066c463604bfab06c107d7adbc1d2c658bed79e6bd22d250f5c899b7a`)

## Related changes

### More from Pinecone

- [Pinecone Python SDK v10.0.0, a major version with breaking changes](https://harbyn.com/changes/pinecone/2026-09-03-pinecone-python-sdk-v10-0-0-released.md) (Breaking change, announced Sep 3, 2026)
- [pinecone-ts-client 9.0.0, a new major version](https://harbyn.com/changes/pinecone/2026-09-09-pinecone-ts-client-9-0-0.md) (Breaking change, announced Sep 9, 2026)
- [Assistant deprecates Gemini 2.5 Pro and o4-mini](https://harbyn.com/changes/pinecone/2026-09-15-assistant-deprecates-gemini-2-5-pro-and-o4-mini.md) (Deprecation, announced Sep 15, 2026)
- [Pinecone Go SDK v7.0.0, a major version with breaking changes](https://harbyn.com/changes/pinecone/2026-09-28-go-sdk-v7-0-0-breaking-changes.md) (Breaking change, announced Sep 28, 2026)

### Changes at other vendors

- [AWS Lambda: Python 3.10 runtime deprecation](https://harbyn.com/changes/aws-lambda/2026-10-08-python-3-10-runtime-deprecation.md) (effective Oct 31, 2026)
- [Jira / Atlassian Cloud: Atlassian Analytics dashboard subscriptions being removed](https://harbyn.com/changes/atlassian-jira/2026-08-10-atlassian-analytics-dashboard-subscriptions-being-removed.md) (effective Nov 2, 2026)
- [Google Cloud Run and Functions: .NET 8 runtime deprecation](https://harbyn.com/changes/google-cloud/2026-10-08-net-8-runtime-deprecation.md) (effective Nov 10, 2026)
- [GitHub: X-GitHub-Stateless-S2S-Token header ignored from 2026-11-30](https://harbyn.com/changes/github/2026-10-02-x-github-stateless-s2s-token-header-ignored-from-2026-11-30.md) (effective Nov 30, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)