Claude Haiku 5.5: a tenth of the price up to 100,000 tokens, and what breaks when you switch
What Haiku 5.5 is, the price step at 100,000 tokens, the old requests that now fail, and my run of the same 12 tickets on both models.

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Articles tagged with #ai
What Haiku 5.5 is, the price step at 100,000 tokens, the old requests that now fail, and my run of the same 12 tickets on both models.

I gave Claude Code 2.1.289 a tiny Python project with two bugs, recorded every event, and broke down the cost token by token. Plus the permission mistake I made first.

What the Model Context Protocol is in plain English, what changed in the 2026-07-28 version, and a real Python server I ran on my Mac: 8 requests, 8 answers, no AI model needed.

Kolibri is a 78.1B mixture-of-experts model with 3.46B active parameters. Why it would not fit on my 24 GB Mac, and what its German-aware tokenizer did against OpenAI's o200k_base in my own run.
What OpenAI's dots are, what OpenAI says keeps them in check, and how I would design an agent that outlives the chat: durable workflows, checkpoints, sandboxes, scoped tokens and approvals.
The ML system design framework: framing the task, offline vs online metrics, feature stores and train-serve skew, candidate generation plus ranking, and drift monitoring.
