# Decision 3.0 vs Drex 1.5 (slim)

> Drex 1.5 scores 69.7 (B) to Decision 3.0's 63.1 (B) for decision models. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/decision-3-vs-nace-drex.md (~2,700 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/decision-3-vs-nace-drex.json · canonical https://www.anchorterminal.com/compare/decision-3-vs-nace-drex
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-12

Drex 1.5 scores 69.7 (B) on agent readiness against Decision 3.0's 63.1 (B), and leads in 5 of 7 scored categories. Decision 3.0 leads on payments & pricing and maintenance & community. Both do decision models.

- Decision 3.0: B 63.1, rank #413 of 965 · https://www.anchorterminal.com/tools/decision-3.min.md
- Drex 1.5: B 69.7, rank #173 of 965 · https://www.anchorterminal.com/tools/nace-drex.min.md
- Decision 3.0, good for Self-hosted typed decisions over screenshots, documents and short video as well as text, where open weights matter. Ahead on Payments & pricing, 60 against 40; Maintenance & community, 82 against 65. Also No key needed to call it; Open source.
- Drex 1.5, good for Routing, triage and yes or no gates inside an agent, where the caller supplies the options and acts on the probabilities. Suited to hosted use at a low per-token price, or to open weights where the licence fits. Ahead on Reliability, 80 against 58; Schema & documentation, 88 against 70; Agent ergonomics, 85 against 72; Security & auth, 65 against 56; Transparency & trust, 63 against 45. Also A hosted endpoint, with nothing to install.

| Category | Decision 3.0 | Drex 1.5 |
| --- | --- | --- |
| Reliability (16%) | 58 | 80 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 70 | 88 |
| Agent ergonomics (13%) | 72 | 85 |
| Security & auth (14%) | 56 | 65 |
| Payments & pricing (10%) | 60 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 82 | 65 |
| Transparency & trust (7%) | 45 | 63 |

| Fact (where they differ) | Decision 3.0 | Drex 1.5 |
| --- | --- | --- |
| Vendor | vLLM Semantic Router Team | Nace AI, Inc. (Nace.AI) |
| Hosted endpoint | no (local only) | `https://console.nace.ai/v1/systemone` |
| Auth | None | API key |
| Pricing | Free | Freemium |
| Licence | Apache-2.0 for the weights and the bundled runtime, built on Apache-2.0 Qwen3.5 and Qwen3.8 bases | Hosted API under the Nace AI Terms of Service, last updated 5 May 2026. Weights under the Nace AI Open RAIL-M licence (modified, version 1.0, October 2026), which is not an open-source licence. Businesses above $1 million in revenue or funding need a separate commercial licence, and competing products are excluded. The bundled code/kev package, derived from Jared Palmer's Kev (https://github.com/jaredpalmer/kev), and the GitHub repository are Apache-2.0, and the agent skill is MIT. |
| llms.txt | no | yes |
| Last release | 2026-10-11 | 2026-09-28 |
| Terms last updated | no document linked |  |
| Privacy policy last updated | no document linked |  |
| Popularity | none | 318 npm/wk, 156 PyPI/wk |