# GLiClass vs pplx-decider

> pplx-decider scores 62.9 (B) to GLiClass's 49.9 (D) for decision models. pplx-decider is cheaper for decision models, $0 against $0 per 1M tokens. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/gliclass-vs-pplx-decider
- Markdown: https://www.anchorterminal.com/compare/gliclass-vs-pplx-decider.md (~2,550 tokens)
- Slim: https://www.anchorterminal.com/compare/gliclass-vs-pplx-decider.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/gliclass-vs-pplx-decider.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

pplx-decider scores 62.9 (B) on agent readiness against GLiClass's 49.9 (D), and leads in 5 of 7 scored categories. GLiClass leads on payments & pricing and transparency & trust. Both do decision models. pplx-decider is cheaper for decision models, $0 against $0 per 1M tokens.

- GLiClass: grade D, 49.9/100, rank #783 of 950. Markdown https://www.anchorterminal.com/tools/gliclass.md · JSON https://www.anchorterminal.com/api/v1/tools/gliclass.json
- pplx-decider: grade B, 62.9/100, rank #417 of 950. Markdown https://www.anchorterminal.com/tools/pplx-decider.md · JSON https://www.anchorterminal.com/api/v1/tools/pplx-decider.json
- Best decision models for AI agents: https://www.anchorterminal.com/best/decision-models/index.md
- All 66 decisions comparisons: https://www.anchorterminal.com/compare/decision-models/index.md

## Which one, for what

### GLiClass (D)

Good for: Topic, intent and sentiment routing over a known label set on the owner's own CPU or GPU, where many labels must be scored at once.

Ahead on:
- Payments & pricing, 60 against 25
- Transparency & trust, 64 against 52

Also in its favour:
- No key needed to call it
- Open source

Watch for: No calibration evidence. The cards report F1 only, and the docs tell users to calibrate thresholds on their own traffic

### pplx-decider (B)

Good for: High-volume classification, routing and rubric scoring over text and images where a team wants a low hosted price and the option to run the same weights itself.

Ahead on:
- Reliability, 61 against 43
- Schema & documentation, 90 against 49
- Agent ergonomics, 76 against 60
- Security & auth, 61 against 38
- Maintenance & community, 62 against 44

Also in its favour:
- Cheaper for decision models, $0 against $0 per 1M tokens
- A hosted endpoint, with nothing to install

Watch for: The Decisions API was released in October 2026, so its incident record is days long, and Perplexity's FAQ says it gives no uptime guarantee


## Score by category

| Category | Weight | GLiClass | pplx-decider | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 43 | 61 | pplx-decider +18 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 49 | 90 | pplx-decider +41 |
| Agent ergonomics | 13% (16.2 this run) | 60 | 76 | pplx-decider +16 |
| Security & auth | 14% (17.5 this run) | 38 | 61 | pplx-decider +23 |
| Payments & pricing | 10% (12.5 this run) | 60 | 25 | GLiClass +35 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 44 | 62 | pplx-decider +18 |
| Transparency & trust | 7% (8.8 this run) | 64 | 52 | GLiClass +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **49.9 · D** | **62.9 · B** | |

## Facts side by side

| Fact | GLiClass | pplx-decider |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Knowledgator | Perplexity |
| Hosted endpoint | no (local only) | `https://api.perplexity.ai/v1/decisions` |
| Transports | HTTP | HTTP |
| Auth | None | API key |
| Pricing | Free | Pay per use |
| Price for decision models | free | free |
| x402 | no | no |
| Licence | Apache-2.0 (library and the model weights we checked) | Apache-2.0 for the published weights. The hosted Decisions API is a proprietary service |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-07-21 | 2026-10-05 |
| Terms last updated | no document linked | couldn't be read |
| Privacy policy last updated | no document linked | couldn't be read |
| Customer content may train models |  | couldn't be read |
| Terms restrict automated access |  | couldn't be read |
| Terms restrict benchmarking |  | couldn't be read |
| Terms or service can change without notice |  | couldn't be read |
| Arbitration or class-action waiver |  | couldn't be read |
| Popularity | 555 stars, 13k PyPI/wk | none |

## Verdicts

**GLiClass.** An Apache-2.0 classifier that scores a whole label set in one encoder pass on the owner's hardware, with single-label, multi-label, hierarchical and few-shot modes. It returns label scores with no calibration claim, the bundled server has no authentication, and the last three test runs on the main branch, on 24 September 2026, failed.

**pplx-decider.** The hosted Decisions API has an OpenAPI description, typed questions, documented limits and a published price of $0.02 per million input tokens, and the v1.1 weights are public under Apache-2.0. The API is days old, the official Python SDK has no method for it, and the governing terms and privacy notice could not be read on 9 October 2026.

## Before you call either

### GLiClass

1. Pass `--host 127.0.0.1` to `python -m gliclass.serve`, or put the port behind your own gateway. The server checks no credential
2. On a machine without a GPU add `--device cpu --dtype float32 --num-gpus-per-replica 0`. The default configuration expects CUDA
3. Send one text a request to `POST /gliclass`. An array in `texts` is cut to its first item without an error
4. Set `multi_label` to false for one label from a set. The default scores each label independently, so scores do not sum to 1
5. Keep text plus labels under the pipeline's 1,024-token `max_length`, or use `ZeroShotClassificationWithChunkingPipeline`. Longer input is truncated silently

### pplx-decider

1. Send `Authorization: Bearer`. A key in `x-api-key` returns 401 on this endpoint.
2. Set `model` on every request. A missing or unknown model returns 400, and the guide shows a `-latest` name rejected.
3. Resize images to 2,048 tiles of 32 by 32 pixels or fewer before sending. Larger images end in a 504 after about a minute.
4. Check the HTTP status before parsing an error. 404 and 405 have empty bodies, 504 can be HTML, and `error.code` changes type.
5. For the weights, use the repository's `autojev` code. The card says default causal inference does not reproduce the evaluated setup.

## Questions

### Which is better for AI agents, GLiClass or pplx-decider?

pplx-decider scores 62.9 (B) on agent readiness against GLiClass's 49.9 (D), and leads in 5 of 7 scored categories. GLiClass leads on payments & pricing and transparency & trust.

### Which is cheaper for decision models, GLiClass or pplx-decider?

GLiClass, at free against free for pplx-decider. These are the vendors' published prices for the job.

### Do GLiClass and pplx-decider need an API key?

GLiClass needs no key. pplx-decider needs an API key.

### Can an agent call GLiClass and pplx-decider without installing anything?

No hosted endpoint is listed for GLiClass. pplx-decider has a hosted endpoint at https://api.perplexity.ai/v1/decisions.

### Are GLiClass and pplx-decider open source?

GLiClass is open source (Apache-2.0 (library and the model weights we checked)). No open-source release is listed for pplx-decider.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/gliclass-vs-pplx-decider.json, and with the fewest tokens: https://www.anchorterminal.com/compare/gliclass-vs-pplx-decider.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "gliclass", "b": "pplx-decider"}`. From a terminal: `anchor compare gliclass pplx-decider`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/gliclass.json and https://www.anchorterminal.com/api/v1/tools/pplx-decider.json

## Other comparisons with GLiClass or pplx-decider

- [Celeris-1 Decision vs GLiClass](https://www.anchorterminal.com/compare/celeris-1-decision-vs-gliclass.md)
- [Celeris-1 Decision vs pplx-decider](https://www.anchorterminal.com/compare/celeris-1-decision-vs-pplx-decider.md)
- [Clef vs GLiClass](https://www.anchorterminal.com/compare/cloudflare-clef-vs-gliclass.md)
- [Clef vs pplx-decider](https://www.anchorterminal.com/compare/cloudflare-clef-vs-pplx-decider.md)
- [Laya vs GLiClass](https://www.anchorterminal.com/compare/convai-laya-vs-gliclass.md)
- [Laya vs pplx-decider](https://www.anchorterminal.com/compare/convai-laya-vs-pplx-decider.md)
- [Decider vs GLiClass](https://www.anchorterminal.com/compare/decider-vs-gliclass.md)
- [Decider vs pplx-decider](https://www.anchorterminal.com/compare/decider-vs-pplx-decider.md)
- [GLiClass vs Kev](https://www.anchorterminal.com/compare/gliclass-vs-jaredpalmer-kev.md)
- [GLiClass vs Liquid d1](https://www.anchorterminal.com/compare/gliclass-vs-liquid-d1.md)
- [GLiClass vs OpenAI Decisions API](https://www.anchorterminal.com/compare/gliclass-vs-openai-decisions-api.md)
- [GLiClass vs Strands Decider 2B](https://www.anchorterminal.com/compare/gliclass-vs-strands-decider.md)
- [GLiClass vs Jev](https://www.anchorterminal.com/compare/gliclass-vs-typesafe-jev.md)
- [GLiClass vs Vela 2.0](https://www.anchorterminal.com/compare/gliclass-vs-vela.md)
- [Kev vs pplx-decider](https://www.anchorterminal.com/compare/jaredpalmer-kev-vs-pplx-decider.md)
- [Liquid d1 vs pplx-decider](https://www.anchorterminal.com/compare/liquid-d1-vs-pplx-decider.md)
- [OpenAI Decisions API vs pplx-decider](https://www.anchorterminal.com/compare/openai-decisions-api-vs-pplx-decider.md)
- [pplx-decider vs Strands Decider 2B](https://www.anchorterminal.com/compare/pplx-decider-vs-strands-decider.md)
- [pplx-decider vs Jev](https://www.anchorterminal.com/compare/pplx-decider-vs-typesafe-jev.md)
- [pplx-decider vs Vela 2.0](https://www.anchorterminal.com/compare/pplx-decider-vs-vela.md)