OpenRouter variants() returns empty for non-GPT/gemini/claude reasoning models

[AnthonyMLau]

Description

When using a reasoning-capable model through OpenRouter (e.g. openrouter/deepseek/deepseek-v4-pro), the TUI shows no reasoning effort variants even though the model has capabilities.reasoning: true.

Plugins

No response

OpenCode version

1.15.13

Steps to reproduce

1. connect opencode to openrouter
2. select deepseek-v4-pro
3. no variants show up (/variant or ctrl + T)

Screenshot and/or share link

No response

Operating System

ubuntu 22.04 wsl2

Terminal

windows terminal

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• missing reasoning variants for multiple providers #12155: Missing reasoning variants for OpenRouter and other OpenAI-compatible providers (same symptom — no variants shown for reasoning-capable models on OpenRouter; this was previously closed)

If that issue was not fully resolved for your case (e.g. specific models like deepseek-v4-pro still don't show variants), it may be worth referencing it or re-opening/linking to it to track the regression.