Head to head · Decision models · October 2026 research run
Decision 3.0 vs SPEV
Decision 3.0 scores 63.1 (B) on agent readiness against SPEV's 51.1 (D), and leads in 4 of 7 scored categories. SPEV leads on schema & documentation and transparency & trust. Both do decision models.
Best decision models for AI agents · All 136 decisions comparisons
Which one, for what
Best for Self-hosted typed decisions over screenshots, documents and short video as well as text, where open weights matter.
Ahead on
- Reliability, 58 against 45
- Security & auth, 56 against 33
- Payments & pricing, 60 against 30
- Maintenance & community, 82 against 49
Also in its favour
- No key needed to call it
- Open source
Watch for
Released on 10 October 2026, with five tagged releases of each model by 11 October
SPEV D
Best for Typed decisions over raw audio, such as end-of-turn detection, call triage and flagging, plus text and single images, hosted or self-hosted.
Ahead on
- Schema & documentation, 81 against 70
- Transparency & trust, 54 against 45
Also in its favour
- A hosted endpoint, with nothing to install
Watch for
Published on 14 October 2026, with no service record, no status page and no API changelog
Score by category
| Category | Weight this run | Decision 3.0 | SPEV | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 58 | 45 | Decision 3.0 +13 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 70 | 81 | SPEV +11 |
| Agent ergonomics | 13%16.2 | 72 | 76 | SPEV +4 |
| Security & auth | 14%17.5 | 56 | 33 | Decision 3.0 +23 |
| Payments & pricing | 10%12.5 | 60 | 30 | Decision 3.0 +30 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 82 | 49 | Decision 3.0 +33 |
| Transparency & trust | 7%8.8 | 45 | 54 | SPEV +9 |
| Negative events | ≤15 | 0 | -2 | |
| Total | B 63.1/100 | D 51.1/100 |
Facts side by side
| Fact | Decision 3.0 | SPEV |
|---|---|---|
| Kind | Model API | Model API |
| Vendor | vLLM Semantic Router Team | Sprag |
| Hosted endpoint | no (local only) | https://api.sprag.ai/v1/decisions |
| Transports | HTTP | HTTP |
| Auth | None | API key |
| Pricing | Free | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 for the weights and the bundled runtime, built on Apache-2.0 Qwen3.5 and Qwen3.8 bases | Apache-2.0 (weights and inference code, following the Qwen3-Omni base). Training code and data aren't published |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-10-11 | 2026-10-14 |
| Terms last updated | no document linked | 2026-09-01 |
| Privacy policy last updated | no document linked | 2026-08-01 |
| Customer content may train models | yes, with an opt-out | |
| Terms restrict automated access | not found in the text | |
| Terms restrict benchmarking | not found in the text | |
| Terms or service can change without notice | not found in the text | |
| Arbitration or class-action waiver | not found in the text |
Verdicts
Decision 3.0
Open Apache-2.0 decision models that read images and video as well as text and answer several typed questions in one call, with a probability per option and tagged Hub releases. They are two days old, need a GPU and trust_remote_code, drop Vela's set and span types, and publish no calibration figures.
SPEV
SPEV answers typed questions over text, audio or an image in one call, with a public OpenAPI schema and Apache-2.0 weights on Hugging Face. It is a day old, has an 8,192-token context, no status page or changelog, and Sprag's terms let it train on API content unless the customer opts out by email.
Before you call either
Decision 3.0
- Pin a tag or commit with
revision=when loading from the Hub. Each model had five tagged releases on 10 and 11 October - Send images and videos to
d3_server.pyas base64 data URLs only. The server refuses paths and http URLs with 422 - Set
DECISION_API_KEYbefore binding the bundled server beyond 127.0.0.1. It is open otherwise - Turn on
permutation_average=Truewhen routing must not depend on option order. It is off by default - Expect one request at a time from the bundled server. Use the router's model runtime for queued serving
SPEV
- Send
model: "spev"toPOST https://api.sprag.ai/v1/decisionswith a bearer key./v1/systemonereturns 410 - Ask every question about one piece of evidence in one request. Answers come back in question order
- Send audio as base64 in
input_audiowithformat, not as a data URL, and at most one image across all messages - Keep evidence and questions under 8,192 tokens. Over the limit returns 400
model_limit_exceeded - Back off on 429 and 503 for
Retry-Afterseconds. Limits are 60 requests a minute per organisation by default - Handle an answer of type
refusal, which carries no probabilities
Questions
Which is better for AI agents, Decision 3.0 or SPEV?
Decision 3.0 scores 63.1 (B) on agent readiness against SPEV's 51.1 (D), and leads in 4 of 7 scored categories. SPEV leads on schema & documentation and transparency & trust.
Do Decision 3.0 and SPEV need an API key?
Decision 3.0 needs no key. SPEV needs an API key.
Can an agent call Decision 3.0 and SPEV without installing anything?
No hosted endpoint is listed for Decision 3.0. SPEV has a hosted endpoint at https://api.sprag.ai/v1/decisions.
Are Decision 3.0 and SPEV open source?
Decision 3.0 is open source (Apache-2.0 for the weights and the bundled runtime, built on Apache-2.0 Qwen3.5 and Qwen3.8 bases). No open-source release is listed for SPEV.
Other comparisons with Decision 3.0 or SPEV
- Celeris-1 Decision vs Decision 3.0
- Celeris-1 Decision vs SPEV
- Clef vs Decision 3.0
- Clef vs SPEV
- Laya vs Decision 3.0
- Laya vs SPEV
- Decider vs Decision 3.0
- Decider vs SPEV
- Decision 3.0 vs GLiClass
- Decision 3.0 vs Kev
- Decision 3.0 vs Liquid d1
- Decision 3.0 vs Microsoft-Decision-1
- Decision 3.0 vs Drex 1.5
- Decision 3.0 vs OpenAI Decisions API
- Decision 3.0 vs pplx-decider
- Decision 3.0 vs ScaleDown
- Decision 3.0 vs Strands Decider 2B
- Decision 3.0 vs Jev
- Decision 3.0 vs Vela 2.0
- GLiClass vs SPEV
- Kev vs SPEV
- Liquid d1 vs SPEV
- Microsoft-Decision-1 vs SPEV
- Drex 1.5 vs SPEV
- OpenAI Decisions API vs SPEV
- pplx-decider vs SPEV
- ScaleDown vs SPEV
- SPEV vs Strands Decider 2B
- SPEV vs Jev
- SPEV vs Vela 2.0
Machine-readable
- This page as Markdown
/compare/decision-3-vs-sprag-spev.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/decision-3.json·/api/v1/tools/sprag-spev.json - From a terminal
anchor compare decision-3 sprag-spev(the CLI) - Over MCP
compare_tools {"a": "decision-3", "b": "sprag-spev"}at/mcp, no key