cheapoS Less bill.
More brag.
Autonomous software development powered by multi-model cooperation and generous free tiers. Zero subscription tax. 100% local deterministic unit test verification.
Top Cheapo
SMALL BILL
and counting
Get cheapoS Free
Autonomous coding with local test execution and zero subscription tax. Choose your preferred environment:
Grab 2 Free API Keys
cheapos harnesses generous free quotas. Get a free key from Google AI Studio (Gemini 2.5 Flash) and GroqCloud (Llama 3.3 70B). Zero credit card required.
Enter Any Task Prompt
Type what you want to build (CLI tool, micro-app, test suite). The fast worker drafts code while the reviewer critiques and fixes mistakes autonomously.
⚡ 0 bill shock · 100% local executionDeterministic Test & Ship
cheapos never stops until local unit tests pass (e.g. 28/28 tests passing). Review the diff and 1-click share your finished product to the Workbench.
Explore 10 showcase builds →The Leaderboard
See who's extracting maximum compute with minimum bill. Filter by month or all-time, inspect model distributions, and claim your place on the board.
Showcase & Finished Builds
Complete, working software built end-to-end with cheapoS in a single run. Backed by deterministic unit tests and public GitHub repositories.
Model Index & Telemetry
Live telemetric breakdown of the frontier and free models cheapoS builders use to eliminate commercial API bills.
The Frugal Manifesto & FAQ
Everything you need to know about autonomous software development with zero subscription tax.
There is no catch and no hidden bill. Top inference providers (Google AI Studio, GroqCloud, Cerebras) offer generous free developer tiers with high rate limits (e.g. 15 requests per minute, 1,500 per day) to encourage adoption.
Traditional agent tools either force a $20–$200/mo subscription or burn expensive proprietary tokens indiscriminately. cheapoS uses prompt caching, change-scoped diffing, and intelligent model handoffs (e.g. Gemini 2.5 Flash for planning + Groq Llama 3.3 70B for review) so the entire development loop fits inside free quotas.