Developer's 48-Hour Field Notes Reveal Hidden Pitfalls of Free LLM Tiers in Production
A series of field notes documents failures when using free LLM tiers: token accounting surprises, schema drift, untrusted checkpoints, and misleading latency metrics.
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Timeline · 11 reports
- 2026-11-09 03:30 · DEV Community — AI
48-Hour Field Notes: Every Record Parsed Cleanly and the Reconciliation Was Off by a Cent - 2026-11-08 20:17 · DEV Community — AI
48-Hour Field Notes: I Moved a Nightly Job Onto a Free Server and Timed What the Cold Boot Ate - 2026-11-08 17:37 · DEV Community — AI
48-Hour Field Notes: My "Slow" Free Endpoint Was Three Different Clocks in One Request - 2026-11-08 14:31 · DEV Community — AI
48-Hour Field Notes: My Batch Job Survived the Restart but Came Back With a Checkpoint I Couldn't Trust - 2026-11-08 08:20 · DEV Community — AI
48-Hour Field Notes: My JSON Schema Passed While My Enum Quietly Drifted - 2026-11-08 05:15 · DEV Community — AI
48-Hour Field Notes: Same Prompt, Two JSON Shapes, and a Validator That Passed Both - 2026-11-08 02:09 · DEV Community — AI
48-Hour Field Notes: A Free Model Swap Broke My Parser, So I Built a Schema Gate - 2026-11-07 19:00 · DEV Community — AI
48-Hour Field Notes: I Built a Token Ledger Before Pointing a Free LLM Tier at a Loop - 2026-11-06 21:43 · DEV Community — AI
48-Hour Field Notes: My Resume Saved a Position Instead of a Record, and Nine Inputs Went Missing - 2026-11-06 16:50 · DEV Community — AI
48-Hour Field Notes: The Prompt That Broke Without a Changelog - 2026-11-06 14:54 · DEV Community — AI
48-Hour Field Notes: My Readiness Check Returned 200, Then the Batch Hit a Cold Model Server