[BUG] backend Zen models downgraded without notification

[davidbernat]

Description

Modern generative agentic code use Python aware LSPs. Repeatedly changes are detectable in OpenCode quality that reflect total misunderstanding of basic programming concepts and basic fundamental day one Python coding. It is inconceivable that an LLM in 2026 would choose to implement these three lines (and an os.remove() ten lines later. Furthermore, this code is a basic refactoring of existing code that already performs these exact functionalities which Starlight LLC already wrote and operated. OpenCode is overriding basic Python and existing production code. Please just resolve the ticket #24182 (comment) Dax and call Paul Graham and Jessica Livingston to discuss their retirements. No reason to waste more of our collective times.

Plugins

None

OpenCode version

v1.4.10
Big-Pickle model, April 24 12:25PM ET

Steps to reproduce

1. Provide reference examples of modern textbook Python techniques.
2. Despite OpenCode failures during contentious investor debates
3. Get worse Zen code quality
4. Post this ticket
5. Wait for founders to resolve the issue
6. Profit.

AND

1. Provide reference code of Python tempfile using textbook context manager syntax
2. Ask OpenCode to refactor code to new file directory.
3. Repeatedly tell OpenCode to use tempfiles instead of os.remove on hard coded files
4. Watch OpenCode create tempfiles, not use its context manager or delete function, add additional os.remove

Sorry, team, this is the my way of the highway phase of opencode.

Screenshot and/or share link

No response

Operating System

macOs 26.2.1

Terminal

IntelliJ Terminal & Terminal

[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• The description does not clearly describe the actual bug. The title claims "Zen models downgraded without notification" but the body discusses unrelated concerns (Python code quality, investor debates, etc.) rather than providing a technical description of which models were downgraded, what behavior changed, and how to confirm the regression.
• The steps to reproduce do not actually describe steps to reproduce the reported bug. They need to explain how to observe the Zen model downgrade/quality change.
• The issue should include specific, actionable technical details: which Zen model(s) are affected, what the expected behavior was, and what the actual behavior is now.

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

If you believe this was flagged incorrectly, please let a maintainer know.

[davidbernat]

The ticket has been updated to reflect the bot requirements for reproduction.
Not addressing these tickets benefits me not you @thdxr
Answer as though the world is evaluating your future as a founder.

[github-actions]

Thanks for updating the issue! It now includes the required fields, reproduction steps, and version information. The needs:compliance label has been removed.