Model tracker / Decision models / Baseten (Base Labs)
Joey-1
Smallest open-weight Base Labs decision model, 2B on Qwen3.5-2B, for high-volume calls
Joey-1 is an open-weight decision model from Baseten (Base Labs) (MIT, 2B parameters): it answers typed questions, such as yes or no, pick one or pick several, with probabilities instead of writing text. It costs $0.01 per million input tokens (Baseten Model APIs), and output is free. JevBench, the main independent benchmark, doesn't list it yet.
- Made by
- Baseten (Base Labs)
- Weights
- Open, MIT
- Size
- 2B
- Where
- Baseten Model APIs
- Images
- Yes
- Context
- 16,384 (max sequence length) on Model APIs; dedicated deployments allow 262K
- Fine-tuning
- Available for post-training on Baseten Training Jobs
Joey-1 price
US dollars per million input tokens. Decision models don't write text, so none of the hosted ones charge for output.
| Where | Input | Output | Notes | Checked |
|---|---|---|---|---|
| Baseten Model APIs | $0.01 | Free | Baseten Model APIs; no output price listed. | 2026-10-30 |
Joey-1 speed
| Measure | Result | Reported by |
|---|---|---|
| Reported speed | 20 ms P50 end to end for an average 2,000-token request in production | Baseten (Base Labs) |
Measured by the maker on its own hardware; JevBench doesn't list this model yet.
Decision models like Joey-1
Every other decision model we track, by independent JevBench score.
| Model | Input / M | JevBench | Weights |
|---|---|---|---|
| Joey-1 | $0.01 | – | Open |
| Mammoth-1 Baseten (Base Labs) | $0.10 | 85.2 | Open |
| Perplexity Decider V1.2 Perplexity | $0.02 | 80.8 | Open |
| d1-ultra Liquid AI | $0.042 | 80.5 | Closed |
| Kev-27B Jared Palmer | Self-host | 78.9 | Open |
| Clef Cloudflare | $0.24 | 75.3 | Open |
| Jev 1.14 TypeSafe AI | $0.042 | 75.0 | Closed |
| d1 Liquid AI | $0.02 | 74.4 | Closed |
| Mercury Decide Inception | $0.02 | 73.6 | Closed |
| OpenAI Decisions (GPT-6 Luna) OpenAI | $0.10 | 73.5 | Closed |
| Microsoft-Decision-1 Microsoft | $0.042 | 70.8 | Closed |
| Elephant-1 Baseten (Base Labs) | $0.035 | 70.2 | Open |
| Strands Decider 26B-A4B AWS Strands Labs | Self-host | 66.7 | Open |
| Clef-flash Cloudflare | $0.038 | 63.8 | Open |
| Perplexity Decider Flash V1.2 Perplexity | $0.01 | 61.7 | Open |
| Clef-omni Cloudflare | $0.15 | 58.3 | Open |
| d1-3B Liquid AI | Self-host | 49.5 | Open |
| d1-omni-600M (experimental) Liquid AI | Self-host | 32.8 | Open |
| Laya Convai Innovations | Free | 32.5 | Open |
| CLM-8B Stanford and NVIDIA | Self-host | 20.1 | Open |
| Clairic Cloudflare | $0.10 | – | Closed |
| d1-2B Liquid AI | Self-host | – | Open |
| d1-omni-2B Liquid AI | Self-host | – | Open |
| Kev-0.8B Jared Palmer | Self-host | – | Open |
| Kev-4B Jared Palmer | Self-host | – | Open |
| Kev-9B Jared Palmer | Self-host | – | Open |
| Strands Decider 12B AWS Strands Labs | Self-host | – | Open |
| Strands Decider 2B AWS Strands Labs | Self-host | – | Open |
| Strands Decider E2B AWS Strands Labs | Self-host | – | Open |
| Strands Decider E4B AWS Strands Labs | Self-host | – | Open |
Compare them all in the decision models table →
Joey-1 FAQ
How much does Joey-1 cost?
Joey-1 costs $0.01 per million input tokens at Baseten Model APIs. Baseten Model APIs; no output price listed. Checked 30 October 2026.
Is Joey-1 open weight?
Yes. Baseten (Base Labs) publishes the weights under MIT, so you can run and fine-tune it yourself.
How fast is Joey-1?
Baseten (Base Labs) reports 20 ms P50 end to end for an average 2,000-token request in production, measured on its own hardware.
How does Joey-1 compare with Jev?
JevBench doesn't list Joey-1 yet, so there's no independent comparison. Jev costs $0.042 per million input tokens; Joey-1 costs $0.01.