Working Notes on Agent Systems/Brad Zhang

@teach_fireworks / X longform

The core paradigm migration of Agentic AI: from the lowest token generation, to chat alignment, to

The core paradigm migration of Agentic AI: from the lowest token generation, to chat alignment, to tool-augmented reasoning, goal-oriented execution, and finally...

July 4, 2026 · 1 min read

The core paradigm migration of Agentic AI: from the lowest token generation, to chat alignment, to
Figure 1 / source image

The core paradigm migration of Agentic AI: from the lowest token generation, to chat alignment, to tool-augmented reasoning, goal-oriented execution, and finally to multi-agent automation and software factory.

The competitiveness of future AI systems no longer only depends on the quality of a single response.

The design capabilities of the entire loop have become extremely important: How to define goal?

How to call tools?

How to build judge?

How to retry?

How to set exit condition?

How to distribute tasks among multiple agents?

Prompt engineering is just the entrance, and Loop engineering is the real system engineering in the Agent era.

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FORMATTOPICCAPABILITYMARKETcoverscoverssignalssignalssignalssignalsFORMATlongform noteTOPICagentsTOPICtoolingCAPABILITYagent workflowCAPABILITYAI-native workbenchCAPABILITYevaluationMARKETapplied AI team
Mermaid outline
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  capability-evaluation["evaluation"]
  market-applied-ai-team["applied AI team"]
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  format-long_post -->|covers| topic-tooling
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The core paradigm migration of Agentic AI: from the lowest token generation, to chat...THESISThe core paradigmmigration of AgenticAI: from the lowesttoken generation, toSIGNALThe core paradigmmigration of AgenticAI: from the lowesttoken generation, toOPERATORHow to build judge?IMPLICATIONPrompt engineering isjust the entrance, andLoop engineering isthe real system
Mermaid outline
flowchart LR
  thesis["The core paradigm migration of Agentic AI: from the lowest token generation, to chat alignment, to tool-aug..."]
  signal["The core paradigm migration of Agentic AI: from the lowest token generation, to chat alignment, to tool-aug..."]
  operator["How to build judge?"]
  implication["Prompt engineering is just the entrance, and Loop engineering is the real system engineering in the Agent era."]
  thesis -->|frames| signal
  signal -->|develops| operator
  operator -->|lands in| implication

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