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onepass: caliber-flex-1b and Omar (kouhxp): gutsy, compared on what they decide, where they run, what they cost and what their publishers report.
| Property | onepass/caliber-flex-1b | kouhxp/gutsy |
|---|---|---|
| Summary | Caliber Flex 1B by OnePass. Decision-only model, exactly 1,000,000,000 parameters. | Omar (kouhxp)'s CPU decision model: a Qwen3.5-0.8B fine-tune shipped as GGUF for llama.cpp that answers yes/no, choice and score questions with a probability per option plus a 'none of these' reject probability, served by a local Jev-style HTTP runtime. |
| Decides | choice, noul, score | choice, score, noul, classify, route |
| Architecture | llm | gutsy |
| Fine-tuned from | qwen/qwen3.5-0.8b-base | qwen/qwen3.5-0.8b |
| License | caliber-flex-non-commercial-1.0 | apache-2.0 |
| Availability | Open weights | Open weights |
| Hosted by | — | — |
| Input price | — | — |
| Decision accuracy | — | 73.2% |
| Calibration error | — | — |
| Valid action rate | — | — |
| Median latency | — | — |
| p95 latency | — | — |
| Evaluation suite | — | JevBench public set (231 items; 169 correct), the maker's own run with Q8_0 |
| Latest version | 0.3.0 | 0.4.0 |
| Variants | LICENSE, Modelfile, merged | LICENSE, gutsy-inference |
| Size of latest version | 2.6 GB | 1.2 GB |
| Files | 12 | 24 |
| Downloads | 68 | 0 |
| Stars | 0 | 0 |
| Tags | decision-model, calibrated, qwen3_5, timesfm-distilled, onepass, gguf | system-one, qwen, gguf, llama-cpp, cpu, 0.8b |
| Updated | Oct 29, 2026 | Oct 7, 2026 |
Figures are from each model’s manifest; accuracy and latency are what the publishers report, on their own suites and hardware. Add a third model.
caliber-flex-1b is from onepass and gutsy from Omar (kouhxp). Both have open weights you can download and run. Both answer choice, noul and score questions. Only gutsy answers classify and route. caliber-flex-1b is licensed other; gutsy, apache-2.0.
Only gutsy publishes an accuracy figure (73.2% on JevBench public set (231 items; 169 correct), the maker's own run with Q8_0); caliber-flex-1b does not, so there is no comparison to make without your own test.
caliber-flex-1b: Free (open weights). gutsy: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Yes, both: systemone pull onepass/caliber-flex-1b and systemone pull kouhxp/gutsy download the weights.