Reliable optimized models for coding agents

Zen gives you access to a curated set of AI models that OpenCode has tested and benchmarked specifically for coding agents. No need to worry about inconsistent performance and quality. Use validated models that work.

Get started with Zen

Add $20 Pay as you go balance (+$1.23 card processing fee)

Use with any agent. Set monthly spend limits. Cancel any time.

What problem is Zen solving?

There are so many models available, but only a few work well with coding agents. Most providers configure them differently with varying results.

We're fixing this for everyone, not just OpenCode users.

[*] Testing select models and consulting their teams
[*] Working with providers to ensure they're delivered properly
[*] Benchmarking all model-provider combinations we recommend

How Zen works

While we suggest you use Zen with OpenCode, you can use Zen with any agent.

[1]
Sign up and add $20 balance - follow the setup instructions
[2]
Use Zen with transparent pricing - pay per request with zero markups
[3]
Auto-top up - when your balance reaches $5, we'll automatically add $20

Your privacy is important to us

[*]

All Zen models are hosted in the US. Providers follow a zero-retention policy and do not use your data for model training, with the following exceptions.

Dax Raadex-CEO, Terminal Products

@OpenCode Zen has been life changing, it's truly a no-brainer.

Jay Vex-Founder, SEED, PM, Melt, Pop, Dapt, Cadmus, and ViewPoint

4 out of 5 people on our team love using @OpenCode Zen.

Adam Elmoreex-Hero, AWS

I can't recommend @OpenCode Zen enough. Seriously, it's really good.

David Hillex-Head of Design, Laravel

With @OpenCode Zen I know all the models are tested and perfect for coding agents.

Frank Wangex-Intern, Nvidia (4 times)

I wish I was still at Nvidia.

FAQ

Zen is a curated set of AI models tested and benchmarked for coding agents created by the team behind OpenCode.
Zen only provides models that have been specifically tested and benchmarked for coding agents. You wouldn't use a butter knife to cut steak, so don't use poor models for coding.
Zen is not for profit. Zen passes through the costs from the model providers to you. The higher Zen's usage, the better the rates OpenCode can negotiate, and pass those to you.
Zen charges per request with zero markups, so you pay exactly what the model provider charges. Your total cost depends on usage, and you can set monthly spend limits in your account. To cover costs, OpenCode adds only a small payment processing fee of $1.23 per $20 balance top-up.
All Zen models are hosted in the US. Providers follow a zero-retention policy and do not use your data for model training, with the following exceptions.
Yes, you can set monthly spending limits in your account.
Yes, you can disable billing at any time and use your remaining balance.
While Zen works great with OpenCode, you can use Zen with any agent. Follow the setup instructions in your preferred coding agent.
You may qualify for a refund if the charge was made within the last 14 days and you have not used the credits from that purchase. Contact us to request a refund.

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