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A month with GLM 5.3 Flash used 2B tokens and exposed prototype costs

wagtail.org 3 min read Editor score 7/10

A month-long coding experiment used 2B tokens; the author reports spending $68 on the target model, then 450M tokens and $150 on a prototype MCP server after choosing the wrong model. The cost breakdown is useful for budgeting agent-assisted development.

What

A month-long coding challenge aimed to use GLM 5.3 Flash exclusively, but ended with 1B of 2B tokens going to other models.

How

A vibe-coded MCP prototype consumed 450M tokens and $150 almost overnight after the wrong model was chosen.

Why it matters

The team recommends local usage measurement and budgets for experimentation to make model and prototype costs visible.

Read on wagtail.org → Hacker News · 106 comments

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