OpenCode Zen free models

unrated

The terms

$0 per token (input, output, cached read) on all seven free models listed in the Zen pricing table, served through Zen's pay-as-you-go account (prepaid $20 balance top-ups, optional $20 auto-reload when balance drops below $5); no per-model usage cap published for the free models — OpenCode's Go FAQ states free models carry "a quota of 200 requests/day"; all seven are limited-time promotions and Big Pickle/MiMo-V2.5/Hy3/Nemotron data may be used to improve the models during the free period.

From the official page

"Big Pickle | Free | Free | Free | -"

"MiMo-V2.5 Free | Free | Free | Free | -"

"Nemotron 3 Ultra Free | Free | Free | Free | -"

"Nemotron 3.5 Lightning Free | Free | Free | Free | -"

"Hy3 Free | Free | Free | Free | -"

"Muse Spark 1.2 Contributor Free | Free | Free | Free | -"

"If your balance goes below $5, Zen will automatically reload $20."

"Free models include Big Pickle plus promotional models available at the time, with a quota of 200 requests/day."

"Big Pickle is a stealth model that’s free on OpenCode for a limited time. The team is using this time to collect feedback and improve the model."

"Nemotron 3 Ultra Free is available on OpenCode for a limited time. The team is using this time to collect feedback and improve the model."

"Muse Spark 1.2 Contributor Free: Heavily discounted token pricing in exchange for permission to use your prompts and completions to train future Meta models."

Official source: opencode.ai

Verified 2026-08-26

The math

Free within provider limits — effective marginal cost is $0 until quotas are hit.