topic · 2 notes
Agents, as it ships.
Engineering notes on Agents by Samir Sengupta - each one read from primary sources on the day it happened, with what it changes for people building on it.
August 22, 2026 · LLM Serving · Agents · Inference Cost
GPT-5.6 Sol drops 20% per token, and the agent stacks that won't feel it
OpenAI cut GPT-5.6 Sol pricing 20%. The class-level breakdown (cached input, output, reasoning) isn't confirmed, and both agent stacks in the sources bill via Codex seats, not tokens.
August 7, 2026 · Agents · Tool Calling · LLM Evaluation
Programmatic tool calling matched or beat JSON on 11 of 14 models
On BFCL v4, programmatic tool calling matched or exceeded native JSON calls in 11 of 14 models, hit +10.6% on GPT-5.6, and stayed flat under context rot where JSON dropped 2.3%.
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