# Liquid d1 vs pplx-decider (slim)

> pplx-decider scores 62.9 (B) to Liquid d1's 43.5 (E) for decision models. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/liquid-d1-vs-pplx-decider.md (~2,400 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/liquid-d1-vs-pplx-decider.json · canonical https://www.anchorterminal.com/compare/liquid-d1-vs-pplx-decider
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

pplx-decider scores 62.9 (B) on agent readiness against Liquid d1's 43.5 (E), and leads in 5 of 7 scored categories. Both do decision models.

- Liquid d1: E 43.5, rank #883 of 950 · https://www.anchorterminal.com/tools/liquid-d1.min.md
- pplx-decider: B 62.9, rank #417 of 950 · https://www.anchorterminal.com/tools/pplx-decider.min.md
- Liquid d1, good for Classification, routing, yes or no gates and rubric scoring over text and images at a low per-token price, or on your own hardware with d1-3B where data can't leave.
- pplx-decider, 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 21; Schema & documentation, 90 against 59; Agent ergonomics, 76 against 63; Security & auth, 61 against 35.

| Category | Liquid d1 | pplx-decider |
| --- | --- | --- |
| Reliability (16%) | 21 | 61 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 59 | 90 |
| Agent ergonomics (13%) | 63 | 76 |
| Security & auth (14%) | 35 | 61 |
| Payments & pricing (10%) | 27 | 25 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 60 | 62 |
| Transparency & trust (7%) | 54 | 52 |

| Fact (where they differ) | Liquid d1 | pplx-decider |
| --- | --- | --- |
| Vendor | Liquid AI | Perplexity |
| Hosted endpoint | `https://api.liquid.ai/decisions/v1/systemone` | `https://api.perplexity.ai/v1/decisions` |
| Pricing | Freemium | Pay per use |
| Price for decision models | not published | free |
| Licence | The hosted d1 model is proprietary under Liquid AI's terms of service. The d1-3B and d1-omni-600M weights and model code are under the LFM Open Licence v1.0, which is based on Apache-2.0 and conditions commercial use on annual revenue under $10 million. Training code and data aren't published | Apache-2.0 for the published weights. The hosted Decisions API is a proprietary service |
| Last release | 2026-10-07 | 2026-10-05 |
| Terms last updated | 2026-09-30 | couldn't be read |
| Privacy policy last updated | 2026-09-30 | couldn't be read |
| Customer content may train models | yes | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |