---
title: "Perplexity API Decisions API requests for pplx-decider-v1.1-27b now use pplx-decider-v1.2: 2026-10-16 | Harbyn"
description: "Perplexity API Decisions API requests for pplx-decider-v1.1-27b now use pplx-decider-v1.2, announced Oct 16, 2026."
canonical: "https://harbyn.com/changes/perplexity/2026-10-16-decisions-api-pplx-decider-v1-2-and-pplx-decider-flash-v1-2-pplx-decider-v1-2-re"
last-updated: 2026-10-17
---

# Perplexity API Decisions API requests for pplx-decider-v1.1-27b now use pplx-decider-v1.2

Markdown version of <https://harbyn.com/changes/perplexity/2026-10-16-decisions-api-pplx-decider-v1-2-and-pplx-decider-flash-v1-2-pplx-decider-v1-2-re>.

Behavior change - Perplexity API. low severity. In effect.

pplx-decider-v1.2 replaces pplx-decider-v1.1-27b as the 27B Decisions API model at $0.02 per million input tokens, and the new 4B pplx-decider-flash-v1.2 costs $0.01. Requests that name pplx-decider-v1.1-27b or pplx-decider-v1-27b keep working but now select pplx-decider-v1.2; pplx-decider-latest and pplx-decider-flash-latest follow the newest versions.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Perplexity API](https://harbyn.com/vendors/perplexity.md) |
| Kind | Behavior change |
| Severity | low |
| Status | In effect |
| Announced | Oct 16, 2026 |
| Added to Harbyn | Oct 17, 2026 |
| Lead time | No dated deadline |
| Model IDs | `pplx-decider-v1.1-27b`, `pplx-decider-v1-27b` |
| 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. 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.perplexity.ai/docs/resources/changelog/rss.xml> (changelog, fetched 2026-10-17 13:00 UTC, sha256 `f3560a6fc8a562209cbd017a49d79ea8f3023cd7648f138d40f346b93a4286ec`)

## Related changes

### More from Perplexity API

- [Agent API renames preset to effort](https://harbyn.com/changes/perplexity/2026-10-22-agent-api-preset-renamed-to-effort-this-is-a-naming-change-only.md) (Deprecation, announced Oct 22, 2026)
- [Agent API responses now report sandbox extraction usage and cost](https://harbyn.com/changes/perplexity/2026-10-05-accurate-sandbox-extraction-usage-and-costs-agent-api-responses-now-include-mode.md) (Behavior change, announced Oct 5, 2026)
- [Fast preset now uses Fast Search](https://harbyn.com/changes/perplexity/2026-09-25-fast-preset-uses-fast-search-the-agent-api-fast-preset-now-uses-fast-search-sear.md) (Behavior change, announced Sep 25, 2026)
- [Low, medium, and high presets now use GPT-6 models](https://harbyn.com/changes/perplexity/2026-09-25-low-medium-and-high-presets-use-gpt-6-the-agent-api-low-medium-and-high-presets.md) (Behavior change, announced Sep 25, 2026)

### Changes at other vendors

- [Amazon Selling Partner API: ORDER\_CHANGE notifications add PreFulfillmentStatusChange for Amazon Autos](https://harbyn.com/changes/amazon-sp-api/2026-10-14-sp-api-updates-new-listings-items-api-ivp-values-in-eu5-jp-and-ca-stores-oct-3.md) (effective Oct 28, 2026)
- [BigCommerce: 301 redirects will apply only to storefront channels](https://harbyn.com/changes/bigcommerce/2026-10-07-301-redirects-now-apply-to-storefront-channels-only.md) (effective Nov 10, 2026)
- [GitHub: Secret scanning audit log business field changes to enterprise slug](https://harbyn.com/changes/github/2026-10-20-updates-to-github-secret-scanning-7.md) (effective Nov 12, 2026)
- [Jira / Atlassian Cloud: New IP address ranges in use from January 1, 2027](https://harbyn.com/changes/atlassian-jira/2026-10-16-atlassian-cloud-adds-new-ip-address-ranges.md) (effective Jan 1, 2027)

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