opencode icon indicating copy to clipboard operation
opencode copied to clipboard

Missleading documentation or incorrect behaviour about small_model

Open podliy16 opened this issue 1 day ago • 5 comments

Description

Looking at the documentation for OpenCode at https://opencode.ai/docs/config/:

The small_model option configures a separate model for lightweight tasks like title generation. By default, OpenCode tries to use a cheaper model if one is available from your provider, otherwise it falls back to your main model.

However https://github.com/anomalyco/opencode/blob/253b7ea78403585db916dc2746d07f622015c597/packages/opencode/src/provider/provider.ts#L1109

The code shows that OpenCode first attempts to use its own opencode provider for the small model. Only if the opencode provider is unavailable does it fall back to the user's main configured model.

This discrepancy can lead to unexpected behavior. For example, when using deepseek-reasoner via the DeepSeek provider as a main model, OpenCode silently used opencode nano-5-gpt as the small model. This means session data was sent to OpenCode's servers without explicit notice, raising potential privacy concerns.

Plugins

No response

OpenCode version

No response

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

podliy16 avatar Jan 15 '26 06:01 podliy16