joey Models by Baseten

BasetenMITOpen source
Baseten releases · 3 in the last 12 months · this family litChangelog →
1 model2026Up to 16K ctxFrom $0.010/1M input

Last refreshed 2026-10-30. Next refresh: weekly.

Details

ResearcherBaseten
LicenseMITOSI-approved
Commercial usePermitted
Models1
Released2026
Max context16K

Capabilities

VisionAll models
MultimodalAll models
Structured OutputsAll models

About

joey is Base Labs' 2B open-weight decision model line, the smallest sibling of elephant and mammoth, fine-tuned from Qwen3.5-2B and served on Baseten's System One API.

Decision facts

Best fit
agentvision and multimodal workstructured outputs
Capability starting point
joey-1 with 16K context and structured outputs and multimodal inputs
Lowest tracked input
joey-1 · $0.010/1M · Baseten API
Closest related family
Mammoth

Current Variants

Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.

1 in view
joey-1Current

Use when the workload needs 16K context, 2B parameters, and structured outputs.

2026-1016K context2B parametersstructured outputs

Release Timeline

1 release group
2026-10
1 current
joey-1
16K context2B parametersstructured outputs
Current

Specifications(1 models)

joey model specifications comparison
ModelReleasedContextParametersVisionMultimodalStructured Outputs
joey-12026-1016K2BYesYesYes

Available From(3 providers)

Pricing

joey model pricing by provider
ModelProviderInput / 1MOutput / 1MType
joey-1Baseten API$0.01—Serverless
joey-1OpenRouter$0.01—Serverless
joey-1Vercel AI Gateway$0.01—Serverless