Building & APIs
ZCode, OpenCode and Codex: the app, the model and the bill
The coding tools around the models, how access is paid for, and what a stuck ZCode task taught me about where an AI workflow can fail.
Full guideOpenCode: an open-source coding agent with model choice
OpenCode is an AI coding agent for the terminal, desktop and IDE. It helps write and change code while letting you choose from supported model providers or local models.
Recheck due. Conditions may have changed; this listing is excluded from the current feed.
ACCESS AND VALUE
Free software and selected free models
What makes it different?
The same coding tool can use different providers, local models and supported account connections.
Competitors
- ZCode: A desktop workspace centred on GLM and connected providers
- OpenAI Codex: OpenAI’s coding tool across app, terminal and editor
Product source checked 2026-09-08.
Who it is for
Open-source coding agent.
Who can claim it?
Use is subject to the provider’s supported platforms, account requirements and current terms.
What the free software includes, and what costs extra
The software being free does not make every connected model free. Provider billing and account limits still apply; the available free models can change.
Billing and renewal
OpenCode software is open source. Optional model services and subscriptions have separate charges.
- Tax basis
- Not applicable to the free software or plan
- Card required
- Provider’s signup terms
- Expiry
- No fixed offer end date established.
- Public research date
- 8 Sept 2026
- Source checked
- 8 Sept 2026
Further official evidence
More about OpenCode and its offers