pplx-decider vs RightNow System Zero

pplx-decider

The hosted Decisions API now serves v1.2, with an OpenAPI description, typed questions, Python and TypeScript SDK methods and $0.02 per million input tokens, and the weights are public under Apache-2.0. Requests naming v1.1 or v1 are now answered by v1.2 with no notice period, and the response does not say which version answered.

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.

pplx-decider

1. Send Authorization: Bearer. A key in x-api-key returns 401 on this endpoint.
2. Pin pplx-decider-v1.2 and log it with each result. Old names and aliases route to newer versions, and the response echoes the name sent.
3. Revalidate thresholds set on v1.1. The v1.2 card says it gives different answers to v1.1-style requests.
4. Group questions that are facets of one decision. Send independent candidates, such as documents or tools, in separate requests.
5. Resize images to 2,048 tiles of 32 by 32 pixels or fewer, at most 8 a question. Larger images end in a 504 after about a minute.
6. For the weights, use the repository's pplx_decider package. The card says default causal inference does not reproduce the checkpoint.

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.