Lychee-27B
Lychee-27B by LycheeAI is a decision model: it answers typed questions with a probability for each allowed answer instead of generating text. It scores 67.3 on the Jev Decision Index (rank 9).
Pricing
No hosted price is listed. The weights are open: the cost is your own compute.
Specifications
- Provider
- LycheeAI
- Parameters
- 26B
- Released
- Oct 2026
- Open weights
- Yes
- Question types
- Choice (one of N options), Score (ordered rubric), Yes / no
- Mechanism
- Decoder LM with a decision readout
- Backbone
- Qwen/Qwen3.8-27B
- Jev-compatible request
- No
- Runs on CPU
- No
- License
- cc-by-nc-4.0
- Hugging Face
- LycheeAI/Lychee-27B
Benchmarks
- Jev Decision IndexECE 0.108
- 67.3
Jev Decision Index: public 62.8, ECE 0.108, Brier 0.352. Lower ECE means its probabilities can be taken at face value.
Self-reported by the publisher
The model's own claims, often on its own sets or a self-run copy of a public suite. Not independently verified and never ranked alongside measured results.
- Jev Decision Index public suite (self-run)Self-reportedDecision Index public balanced skill, edition 0.3 kit (release-v3), self-run
- 62.8
Speed & latency
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FAQ
How much does Lychee-27B cost?
Lychee-27B has no hosted price listed; its weights are open, so the cost is the compute you run it on.
What questions can Lychee-27B answer?
Lychee-27B answers choice (one of n options), score (ordered rubric), yes / no questions, returning a probability for each allowed answer.
Is Lychee-27B well calibrated?
On the Jev Decision Index its expected calibration error (ECE) is 0.108; below about 0.05, a stated 80% confidence is right roughly 80% of the time.
Is Lychee-27B open weight, and can it run on a CPU?
Yes, Lychee-27B has open weights. It needs a GPU to run at useful speed.
Data as of 2026-10-26. Source: Metatext decision-model catalogue, 2026-10-14 (Hugging Face). Pricing is per 1M tokens (USD); confirm with the provider before production use.