CommunityJev Benchmarks & Evaluations
Best Decision Model APIs in 2026
A ranked comparison of thirteen decision-model APIs as of October 2026, including Jev, OpenAI Decisions, Clef, Liquid d1, Kev, Perplexity Decider, and Strands, scored on evidence, usage, and price.
- Format
- Article
- Published by
- Community
- Last verified
- Oct 2026
Works forJev for Evaluation
Used inJev for Software & DevTools
Highlights
- Ranks thirteen decision-model APIs from Jev and OpenAI Decisions to Clef, d1, Kev, and Strands.
- Collects vendor, third-party, and OpenRouter usage figures in one place.
- Useful as a map of who offers a decision API and where to call each.
Watch out
Editorial rankings that interleave vendor claims with independent numbers; treat the ordering as opinion and verify any figure before citing it.
Questions about this entry
Short answers drawn from the linked project or page.
Thirteen decision-model APIs as of October 2026: Jev, OpenAI Decisions, Cloudflare Clef, Liquid d1, Kev, Perplexity Decider, Mercury Decide, Jeeves, Strands, Laya, Span-01, Solar, and Tev1, scored on evidence, usage, and price.
It puts the closed rivals and the open reproductions on one page with where to call each, which is faster than tracking the launches separately. The rankings themselves are the author's judgment.
A mix of sources: Cloudflare's latency table and self-run index, Arize scores for Clef, and OpenRouter request counts, such as 5.15M for Clef-flash and 3.73M for Clef in a week.
As a map of the field, not a verdict. Vendor and third-party figures are interleaved, so check the source for any number you plan to rely on and reproduce it on your own task.
FOMA, an AI newsletter, in a piece titled Best Decision Model APIs in 2026. It is editorial, not an official TypeSafe or Cloudflare publication.
Because a dozen similar models appeared within weeks of Jev, each with its own benchmark claim. A single comparison surfaces the spread that any individual launch post hides.
The APIs converge on the same typed shape, so switching between them is mostly a base URL and key change. The real differentiators are price, input modalities, and how they behave on your questions.
Related terms
Glossary definitions related to this entry.
More Jev resources like this
The 400-case, 2,000-decision benchmark open models train and report against: four workflows, state plus typed questions, and gold distributions averaged from three teacher samples.
Jev Benchmarks & EvaluationsDocs#community#benchmarks#evaluation
Community
An independent 2,018-item answer-verifier benchmark: the same items and labels for every entrant, each run on its own maker's code, with Jev, ZTC-Judge, Darwin, and open models ranked by weighted AUC.
Jev Benchmarks & EvaluationsPlayground#community#evaluation#benchmarks
Community
The System One Mosaic Benchmark leaderboard: about 100 decision models compared across 100+ specialized tasks, with results regenerated from a public dataset rather than estimated.
Jev Benchmarks & EvaluationsPlayground#community#evaluation#benchmarks
Community
0GitHub stars
Third-party TypeScript check that compares Jev (typesafe-ai/jev) against openai/gpt-4o-mini and anthropic/claude-sonnet-4.5 under identical conditions, routing 60 synthetic booking inquiries in four languages for a photo-shoot service, all through one Vercel AI Gateway key.
Jev Benchmarks & Evaluations#community#benchmark#comparison
Community
Shogo-nfrealmusic/jev-evalTypeScript
Shogo-nfrealmusic/jev-evalTypeScriptAn unofficial Hugging Face space that tracks open Jev reproductions and scores the ones that finished a frozen benchmark suite.
Jev Benchmarks & EvaluationsPlayground#community#evaluation#open-models
Community
24kGitHub stars
An open Claude Cowork-style workspace whose eval testkit can call Jev as a typed verification judge on agent-produced artifacts.
Jev Benchmarks & Evaluations#community#typescript#agents
Community
different-ai/openworkTypeScript
different-ai/openworkTypeScriptFrom the Jev guides
Original write-ups on what this entry is for.
One model in September, a dozen by October. Clef, Liquid d1, Perplexity, and OpenAI all ship the same typed-answer shape now. How to read the rival benchmarks and pick on your own task.
Jev Models & Reimplementations#decision-model#benchmarks#pricing
Read article
From the Jev community
Posts from builders shipping with Jev right now.