OpenCode made a new stealth model Cat Jam Free available at $0 for input and output - officially announced on @opencode on October 13: "Cat Jam (stealth model) is now free in OpenCode - very fast - built for agentic coding."
Verified specs (from OpenCode's official model registry)
- 262K context window (262,144 tokens)
- 131K max output (131,072 tokens)
- Reasoning effort levels: low, medium, high, xhigh, max
- Tool calling and structured JSON output supported
- $0 input / $0 output / $0 cache read right now
- Text-only: no image/attachment input
- Listed under the
opencodeprovider ascat-jam-free, released October 12, 2026
Who made it?
Unknown - it's a stealth release. Community speculation (some model trackers) suggests it could be Reflection's Beam model, but that is not confirmed by OpenCode or anyone else. Treat the origin as unverified.
How to try it
- Install OpenCode
- Open the model list
- Pick Cat Jam Free
- Start coding - no claim, no code, no card
Caveats
"Free" is time-limited by nature: the registry currently lists $0 cost, but no end date has been announced - stealth free access can end without warning
Text-only, so no screenshots or images in context
Early testers on r/opencode report it's very fast (300+ tok/s in some tests) but quality varies by task
Official announcement: x.com/opencode
Model registry entry: models.dev - opencode/cat-jam-free