Post · Benchmarks & research
Jev against Claude Haiku 5.5 on 262 real decisions
Jev got 204 right and Haiku 5.5 got 177.
Open x.com ↗Jev raised $870M at $7.5B yesterday. On 262 of our real decisions it beat Claude Haiku 5.5, 204 to 177.
TypeSafe's decision model got that valuation weeks after launch, in the same week Anthropic shipped Haiku 5.5 at $0.10 per million input tokens. So we checked whether a cheap
The decision Jev makes
Benchmark questions with known answers, to check accuracy and confidence.
Where it fits
Head-to-head tests, calibration studies and independent research into how well Jev decides, how fast, and at what cost. All 682 benchmarks & research projects →
Related projects
Benchmarks & researchMicaA 4B decision model: calibrated probabilities for yes/no, choice and score questions over long inputs.GitHub · ★ 37 · akivet
Benchmarks & researchawesome-jev-papers📄 Research papers on Jev, TypeSafe's System One model, and the open models built in its shape.GitHub · ★ 5 · OmniJev
Benchmarks & researchjev-typesafe-real-financial-use-casesFifty real-world financial use cases for TypeSafe's Jev model: typed, structured LLM answers over ledgers, fraud, portfolios, trades and filings,…GitHub · ★ 3 · IslamBaraka90
Benchmarks & researchjev-healthcare-labOpen experiment comparing TypeSafe Jev vs DeepSeek on 96 healthcare tasks across 12 scenarios (quality, latency, cost) with per-task data and…GitHub · JuneYaooo
Benchmarks & researchtypesafe-jev-ecosystemExplore the TypeSafe Jev ecosystem: open-source integrations, compatible decision models, SDKs, agent tools, and research.GitHub · ★ 4 · VoltAgent
Benchmarks & researchBeelineBenchHow well do decision models plan across a multi-step problem?GitHub · ★ 3 · kyle-pena-nlp