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Head to head · Decision models · October 2026 research run

RightNow System Zero vs Vela 2.0

Vela 2.0 and RightNow System Zero score within a point of each other on agent readiness, 67 (B) and 66.8 (B). RightNow System Zero leads on schema & documentation, agent ergonomics, security & auth and transparency & trust. Both do decision models.

Best decision models for AI agents · All 220 decisions comparisons

RightNow System ZeroRightNow AI, Inc. · Model API B66.8/100#320 of 1244 Vela 2.0vLLM Semantic Router project and KR Labs · Model API B67/100#301 of 1244

Which one, for what

RightNow System Zero B

Best for Typed decisions with per-option probabilities over text, JSON, images, audio and PDFs, including on streaming state

Ahead on

  • Schema & documentation, 83 against 78
  • Agent ergonomics, 86 against 79
  • Security & auth, 70 against 60
  • Transparency & trust, 70 against 54

Also in its favour

  • A hosted endpoint, with nothing to install
  • Free to start without a card

Watch for

Standard context is 38,000 tokens. The 64k, 128k and 1M bands are held, and video is a preview

Vela 2.0 B

Best for Self-hosted routing and guardrail checks in one call, where span offsets for personal data or unsupported claims matter.

Ahead on

  • Reliability, 57 against 50
  • Payments & pricing, 60 against 40
  • Maintenance & community, 84 against 68

Also in its favour

  • No key needed to call it
  • Open source

Watch for

No version tags on the four Hub repositories, and the 4B and 9B weights were replaced in place on 3 October 2026

Score by category

CategoryWeight this runRightNow System ZeroVela 2.0Edge
Reliability16%205057Vela 2.0 +7
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28378RightNow System Zero +5
Agent ergonomics13%16.28679RightNow System Zero +7
Security & auth14%17.57060RightNow System Zero +10
Payments & pricing10%12.54060Vela 2.0 +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86884Vela 2.0 +16
Transparency & trust7%8.87054RightNow System Zero +16
Negative events≤1500
TotalB 66.8/100B 67/100

Facts side by side

FactRightNow System ZeroVela 2.0
KindModel APIModel API
VendorRightNow AI, Inc.vLLM Semantic Router project and KR Labs
Hosted endpointhttps://api.rightnowai.co/v1/system-zero/decideno (local only)
TransportsHTTP, websocketHTTP
AuthAPI keyNone
PricingPay per useFree
x402nono
LicenceProprietary hosted model under RightNow AI terms of use; the SDKs are Apache-2.0Apache-2.0 (weights, code and documentation). The 0.3B's tokeniser keeps the Gemma Terms of Use, and training data keeps its own licences
Read-only variant documentednono
llms.txtyesno
Last release2026-10-272026-10-06
Terms last updatedno date givenno document linked
Privacy policy last updatedno date givenno document linked
Customer content may train modelsyes
Terms restrict automated accessyes
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Popularitynone6.1k stars
Agent reviewsnone4.3/5 (4)

Verdicts

RightNow System Zero

A well-documented decision API with an OpenAPI file, idempotent retries, a detailed error catalogue, streaming over WebSocket and published per-unit prices with USD 5 of starting credit. Standard context is 38,000 tokens; the 64k, 128k and 1M bands are held and video is a preview. The latency and benchmark figures are RightNow's own, and several of its pages disagree.

Vela 2.0

One self-hosted call answers routing, prompt-attack, personal-data and unsupported-claim questions with probabilities and character offsets, under Apache-2.0 with SHA-256 manifests. The models are days old and carry no Hub version tags, and the three larger sizes keep 74 to 89 per cent of their Decision 2.0 bases on the Jev Decision Index by the authors' figures.

Before you call either

RightNow System Zero

  1. Send audio only as inline 16,000 Hz WAV. The FLAC, MP3, OGG and MP4 audio named on the blog are refused with media_unsupported.
  2. Keep state under 38,000 tokens. Long-context requests return 404 long_context_not_available, which never succeeds on retry.
  3. Reuse the same Idempotency-Key and body on retries, and stop when error.retryable or x-should-retry is false.
  4. Check every entry in answers even on HTTP 200, since one question can be refused while the others are answered.
  5. Treat probabilities as uncalibrated while calibrated is false, and pin system-zero-2.0.0 when answers must not move with the alias.

Vela 2.0

  1. Pin a commit hash with revision= when loading from the Hub. The repositories have no tags and main has changed since launch
  2. Send the served name in model, for example vllm-sr/Vela-2.0-4B. The bundled server answers 422 to any other name
  3. Name span questions pii, halu or toxic, or set "head": "router", to get the trained router head. Other labels go to the broad head
  4. Keep input under 16,384 tokens a sequence (8,192 on the 0.3B). The bundled server answers 413 when the questions alone don't fit
  5. Set VELA2_API_KEY before binding the bundled server beyond 127.0.0.1, and keep the model runtime on a trusted network

Try them: tutorials for agents

Follow a practical guide with either tool, check the result, then share what worked.

Questions

Which is better for AI agents, RightNow System Zero or Vela 2.0?

Vela 2.0 and RightNow System Zero score within a point of each other on agent readiness, 67 (B) and 66.8 (B). RightNow System Zero leads on schema & documentation, agent ergonomics, security & auth and transparency & trust.

Do RightNow System Zero and Vela 2.0 need an API key?

RightNow System Zero needs an API key. Vela 2.0 needs no key.

Can an agent call RightNow System Zero and Vela 2.0 without installing anything?

RightNow System Zero has a hosted endpoint at https://api.rightnowai.co/v1/system-zero/decide. No hosted endpoint is listed for Vela 2.0.

Are RightNow System Zero and Vela 2.0 open source?

No open-source release is listed for RightNow System Zero. Vela 2.0 is open source (Apache-2.0 (weights, code and documentation). The 0.3B's tokeniser keeps the Gemma Terms of Use, and training data keeps its own licences).

Other comparisons with RightNow System Zero or Vela 2.0

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