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AI Builder Notes - May 2026

AI Builder Notes - May 2026

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7 min read
The Budget Guide to Prompt Engineering: Save Money with Every Token

The Budget Guide to Prompt Engineering: Save Money with Every Token

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13 min read
Designing a 3-Tier LLM Fallback Router with Cooldown Locking

Designing a 3-Tier LLM Fallback Router with Cooldown Locking

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5 min read
Your Provenance Vector Dies at the Storage Boundary

Type-level gates and memory compaction

Your Provenance Vector Dies at the Storage Boundary

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8 min read
How we optimized our LLM pipeline to cut token usage by 70%

How we optimized our LLM pipeline to cut token usage by 70%

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3 min read
Mellum2 MoE, Heretic Censorship Removal, & NVIDIA Cosmos 3 Omni-model for Local AI

Mellum2 MoE, Heretic Censorship Removal, & NVIDIA Cosmos 3 Omni-model for Local AI

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3 min read
Claude Code detected a hack that never happened, then spiraled

Claude Code detected a hack that never happened, then spiraled

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5 min read
I built an llms.txt for Salesforce — so AI stops writing deprecated Apex

I built an llms.txt for Salesforce — so AI stops writing deprecated Apex

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4 min read
A weekly tool-use test is the only signal

A weekly tool-use test is the only signal

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3 min read
Provider drift broke our regression evals. We pinned versions through Bifrost.

Provider drift broke our regression evals. We pinned versions through Bifrost.

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4 min read
What every LLM call in your Flutter app actually costs

What every LLM call in your Flutter app actually costs

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1 min read
Centralising tool access for our prompt-assembly agent with Bifrost MCP gateway

Centralising tool access for our prompt-assembly agent with Bifrost MCP gateway

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4 min read
How We Cut AI Infrastructure Costs by 94% Without Sacrificing Quality (And How You Can Too)

How We Cut AI Infrastructure Costs by 94% Without Sacrificing Quality (And How You Can Too)

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13 min read
Cache-hit dispersion is the 7th vendor-risk axis — and the one your invoice can't see

Cache-hit dispersion is the 7th vendor-risk axis — and the one your invoice can't see

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8 min read
What I Learned Building a Local RAG Agent

What I Learned Building a Local RAG Agent

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5 min read
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