01
Preserve thinking
Haiku requests keep manual thinking enabled, with a bounded budget that respects `max_tokens`.
v1.0.3 · Haiku-only OpenCode plugin
opencode-sub2api-haiku-fix
A focused plugin that fixes Haiku's "You're out of extra usage" failure in OpenCode through Sub2API, while preserving thinking and leaving Sub2API, OpenCode, and OMO code untouched.
0
model
0
tests
0
deps
OpenCode / Haiku smoke
Verified path
OpenCode → plugin fetch wrapper → Sub2API → Claude Haiku 4.5
/
smoke test returned OK without extra-usage errors
Narrow fix
Haiku needed the full Claude Code wire shape.
Opus and Sonnet already passed through the route. Haiku failed because its request fingerprint diverged: incomplete system body, missing Claude Code metadata, and thinking shape drift.
02
Patch only Haiku
Provider and body checks exit early for non-Haiku models, leaving Sonnet and Opus untouched.
03
No server fork
The fix lives in an OpenCode plugin, so Sub2API, OpenCode core, and OMO can keep updating normally.
Request surgery
Three precise transformations.
The plugin does not impersonate an account or carry credentials. It normalizes the request OpenCode is already sending through your configured provider.
plugin trace
Install
One package entry.
Add it to OpenCode's plugin list. Existing Sub2API auth and provider configuration stay exactly where they are.
~/.config/opencode/opencode.jsonc
{
"plugin": [
"opencode-sub2api-haiku-fix@latest"
]
}