A free coding model is now one config line away - the catch isn't the model
Tencent open-sourced HY3, a 295-billion-parameter coding model, under a permissive Apache 2.0 licence, and OpenRouter is serving it free through 21 July. What sent it to the top of OpenRouter's weekly chart - 6.13 trillion tokens processed in a single week - wasn't one big deployment. It was individual developers discovering that pointing Codex CLI, Cursor or Cline at OpenRouter's endpoint, a two-line change to a config file, routes every request to the model at zero cost. Because the OpenAI Chat Completions format is now the de facto standard, the switch really is just a base URL and a model name.
What it actually means
The model isn't the story, the switching cost is. Two weeks ago the point here was that the model layer is becoming a thing you swap, not a platform you marry. HY3 is that arriving in your terminal: changing the engine under your coding agent is now a config line, and it's free this week.
Swapping the model is now a config line — but the config line has a jurisdiction.
21 Julwhen Tencent HY3's free window on OpenRouter closes
Source: Tech Times · Wednesday, 15 July 2026