Founder of @polar_sh - building the future of usage-based billing

Stockholm
Joined December 2007
Too many CVEs to dress up as this Halloween.
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Birk Jernström retweeted
Every founder's favourite billing stack for AI software is just a prompt away. polar.sh/integrate
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Replying to @polar_sh
polar is the future of billing >
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Apply for early access to the future - it's around the corner.
billing for agentic workflows ✨ we're building the most ambitious metering & billing engine for AI software. a technical deepdive → polar.sh/field-guide
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Birk Jernström retweeted
billing for agentic workflows ✨ we're building the most ambitious metering & billing engine for AI software. a technical deepdive → polar.sh/field-guide
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Birk Jernström retweeted
Just witnessed an internal @polar_sh demo of our new usage metering engine. 3,750× faster than today. A 99.97% reduction in latency. Coming very soon.
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Birk Jernström retweeted
Meet Polar. A billing & finance platform built for the usage era.
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The type of stuff I have to stumble upon & endure in our team Slack
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Birk Jernström retweeted
Usage Billing with Polar is a breeze ✨ Credits that draw down. Overages. Caps. All built in.
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OH: I'd rather AI kills us all than have an AI boyfriend.
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After the web 2.0 days there has been little to no consumer focus amongst startups. But I think it’s time again. Talk to anyone outside of our tech bubble, and it feels like there is an enormous gap between how we see it vs how consumers leverage it.
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Birk Jernström retweeted
to put in simple terms… if most billing systems are still waiting for the kettle to boil, Polar’s metering already has the tea poured.
Getting there ⚒️
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Undersold it btw. This is metering in production across Vercel Functions (lambda) at 5,000 requests/s. Within 3ms events are ingested, reduced to their meter, pushed across subscribing nodes and read to protect guardrails and balance checks 🏎️ … and we’re just getting started
Getting there ⚒️
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Birk Jernström retweeted
Working on a technical piece on how @polar_sh is building the fastest metering infrastructure for AI. What do you want to know?
Introducing: The next evolution of Polar ✨ We’re building the most ambitious metering & billing substrate for AI software. — Events as the core primitive. A blazing fast, local-first reducer architecture to achieve zero latency metering & entitlement resolution. — Your business as a definition, version controlled & native to agentic workflows. — Definition branching for simulating pricing changes, model forecasts & easy deployment to production. — Signals as business guardrails. Switch to a cheaper AI model when customer’s credits run below a threshold. — Identities as nested entities under the Customer model. Built for agents & services acting on behalf of the customer. Coming soon. Learn more → polar.sh/blog/building-the-n…
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Getting there ⚒️
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Introducing: The next evolution of Polar ✨ We’re building the most ambitious metering & billing substrate for AI software. — Events as the core primitive. A blazing fast, local-first reducer architecture to achieve zero latency metering & entitlement resolution. — Your business as a definition, version controlled & native to agentic workflows. — Definition branching for simulating pricing changes, model forecasts & easy deployment to production. — Signals as business guardrails. Switch to a cheaper AI model when customer’s credits run below a threshold. — Identities as nested entities under the Customer model. Built for agents & services acting on behalf of the customer. Coming soon. Learn more → polar.sh/blog/building-the-n…
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Are there any great designers that stream while they're building & designing?
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Been vibe coding my own financial dashboard this weekend that fetches bank accounts, stocks, currencies etc. Paired with setting budgets, flagging anomalies, bad subscriptions and more. Plus MCP to chat with my data. Why haven’t I done this sooner? It’s glorious.
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Monitoring clankers and touching grass in-between today
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Few things as satisfying as having to do a task that would have required quite a bit of manual, tedious, effort only 1-2 years ago, but can be automated away with a prompt in 10 minutes.
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