messier-one
messier-one by agentmessier is a decision model: it answers typed questions with a probability for each allowed answer instead of generating text.
Pricing
No hosted price is listed. The weights are open: the cost is your own compute.
Specifications
- Provider
- agentmessier
- Parameters
- 5B
- 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/Qwen3.5-4B
- Jev-compatible request
- Yes
- Runs on CPU
- No
- License
- cc-by-nc-4.0
- Hugging Face
- agentmessier/messier-one
Benchmarks
Compare messier-one with…
FAQ
How much does messier-one cost?
messier-one has no hosted price listed; its weights are open, so the cost is the compute you run it on.
What questions can messier-one answer?
messier-one answers choice (one of n options), score (ordered rubric), yes / no questions, returning a probability for each allowed answer.
Is messier-one well calibrated?
No calibration measurement for messier-one is recorded yet.
Is messier-one open weight, and can it run on a CPU?
Yes, messier-one has open weights. It needs a GPU to run at useful speed.
Data as of 2026-10-14. Source: Metatext decision-model catalogue, 2026-10-14 (Benchmark Heaven JevBench, Hugging Face). Pricing is per 1M tokens (USD); confirm with the provider before production use.