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Aneirin
Cut your Claude Code & Copilot token bill, losslessly
Claude Code and GitHub Copilot resend your whole conversation every turn, including pages of the model's own old "thinking" and context repeated word-for-word. You're billed for all of it. Aneirin is a local proxy that strips the redundant, re-billed tokens before the request leaves your machine, losslessly: the model still gets everything it needs, your answers are identical, your bill drops. 100% local, zero telemetry, your prompts never leave. Free up to 5M optimized tokens a day, no account.
Hey Product Hunt 👋
We're Corbenic, and we build with Claude Code and Copilot all day. Watching the token bill climb, we noticed something: agentic tools resend the entire conversation every turn, including pages of the model's own old "thinking" it never needs again, plus context repeated byte-for-byte. You pay for all of it, every single turn.
So we built Aneirin: a small local proxy that strips that redundant, re-billed context before the request ever leaves your machine. It's lossless. The model receives everything it needs, your answers don't change, you just stop paying twice for the same tokens. On our own machines it's removed 650M+ tokens so far, and a typical optimized request comes out about 17% smaller.
Two things mattered most to us. First, it runs 100% locally with no phone-home, so your prompts and code never leave your computer (no telemetry, and the licence even checks offline). Second, it's genuinely free to use: the full optimizer runs free up to 5 million optimized tokens a day, no account needed. Pro just removes the daily cap.
We'd love your feedback, especially edge cases where you'd want it to behave differently. Happy to answer anything about how the lossless part actually works.
About Aneirin on Product Hunt
“Cut your Claude Code & Copilot token bill, losslessly”
Aneirin was submitted on Product Hunt and earned 5 upvotes and 4 comments, placing #129 on the daily leaderboard. Claude Code and GitHub Copilot resend your whole conversation every turn, including pages of the model's own old "thinking" and context repeated word-for-word. You're billed for all of it. Aneirin is a local proxy that strips the redundant, re-billed tokens before the request leaves your machine, losslessly: the model still gets everything it needs, your answers are identical, your bill drops. 100% local, zero telemetry, your prompts never leave. Free up to 5M optimized tokens a day, no account.
On the analytics side, Aneirin competes within Productivity, Developer Tools, Artificial Intelligence and GitHub — topics that collectively have 1.7M followers on Product Hunt. The dashboard above tracks how Aneirin performed against the three products that launched closest to it on the same day.
Who hunted Aneirin?
Aneirin was hunted by CorbenicAI. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Aneirin including community comment highlights and product details, visit the product overview.
CorbenicAI