milliseconds.ai vs HarnessUp

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

milliseconds.ai compared with HarnessUp
Detail	milliseconds.ai	HarnessUp
What it does	Small model. Big decisions.	Up to 3x more work with the same tokens on Claude Code and Codex
Stage	Not given	Not given
Founded	Not given	Not given
Based in	CA	BR
Pricing model	Freemium	Freemium
Pricing	Test plan: 125 million free input tokens per month with test_sk keys. Production plan: $0.04 per million input tokens with prod_sk keys (no charge for output tokens). Minimum credit bundle of $10 to unlock production access.	Basic FREE: always free with measurement and monitoring tools. Pró: US$9/month with 7 days free trial, includes Delta Read, Code Finder, Terminal Guide, Stop Loss, Budget Cap, and Git Admin. Ultra: US$12/month with 7 days free trial, adds Cheap Swarm and security features. GIGA UNLIMITED: US$27/mont
Key features	Classification with score distribution and confidence Text and image extraction Yes/no decisions with probability Entity recognition and extraction Field verification against source Multi-level classification (classify-tree) OpenAI SDK compatibility Sentiment or tone rating Question answering with source spans SDK support for TypeScript and Python	Deep Scan: measures token consumption by analyzing conversation history Smart Compress: compresses requests without calling the model Delta Read: reduces rereading of context across turns Cheap Swarm: routes lightweight tasks to cheaper models with 26 task classes Secret Lock: masks passwords and keys before they enter conversations Code Deck: 4 concurrent agent slots with 17+ CLI options KanBan Sync: automatic task board synced with agent planning HarnessUp Flow: create agentic workflows on infinite canvas Board: infinite canvas for notes, images, and columns Stop Loss: budget cap to prevent exceeding spending limits
What makes it different	Optimized for bounded decisions with millisecond latency, avoiding slow token-by-token generation Extremely cost-effective at $0.04 per million input tokens with no output token charges 125 million free test tokens monthly with no card required Production-ready with REST API, SDKs, and CLI interfaces Structured responses enable direct application logic without additional parsing	Measures token waste with your own data before charging anything Reverses AI damage with one button undo functionality No login required to start measuring token usage
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	18 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	28	0
Citation Flow (Majestic)	31	0
Referring domains (Majestic)	42	0

6 details filled in for both companies.

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