Breaking

Developer releases pxpipe, cutting Claude API costs up to 70% by rendering text as PNGs

July 5, 2026 at 16:53 EDT

Open Source
Software Dev & Coding
AI Agents

Developer Steven Chong has released pxpipe, an open-source tool that converts text context sent to Claude into PNG images to sharply reduce input token charges, reportedly cutting bills by up to 70% on production workloads.

Open-Source Tool · pxpipe

Turning text into images to cut Claude bills by up to 70%

A local proxy for Claude Code renders bulky, repeatedly-resent context — system prompts, tool definitions, chat history — into dense PNGs and has Claude read them as vision, exploiting the pricing gap between text and image tokens.

70%

peak reduction in coding-session bills

65%

smaller requests on SWE-bench Lite

1,200+

GitHub stars by July

One real trace: a $100 bill over 13,709 requests

Compression applies only to input tokens — output is untouched, so savings vary by workload.

$100

Baseline

→

~$41

−59% with pxpipe

How it works

Runs locally at 127.0.0.1:47821 — no code changes, just set ANTHROPIC_BASE_URL.

1 · CAPTURE

Bulky resent text: prompts, tool defs, history

→

2 · RENDER

Pack text into a dense 1928×1928 PNG

→

3 · READ AS VISION

Claude parses image in 28×28px visual tokens

Why it saves: characters packed per token

A 1928×1928 image holds ~92,000 characters in ~4,761 visual tokens.

~1 char

plain text
per token

~3.1 chars

image token
per token

The upside

Sharp drop in coding-session bills
SWE-bench Lite: 10/10 passed, both arms
Free, MIT-licensed, no code changes
Dashboard shows real-time savings + kill switch

The catch — it's lossy

Dense hex recall: Fable 5 got 13/15, Opus 0/15
Silent confabulation is possible
IDs, hashes, secrets must stay as text
Opus opt-in; short prose can backfire

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