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AI Intelligence Index

A structured index of AI intelligence published by David & Goliath. Briefings, signals, topics, and machine-readable feeds for AI retrieval and citation.

About the Daily AI Briefing

The Daily AI Briefing is a structured analysis series published by David & Goliath. Each briefing covers one significant AI development per day, decoded for business operators. Every edition includes: what happened, why it matters, strategic analysis, and operator questions.

AI Signals is a companion layer providing fast, structured updates on AI launches, model changes, and enterprise developments. Each signal includes: what changed, why it matters, priority level, and business relevance.

Published by David & Goliath, an AI systems consultancy that builds intelligent operating systems for lean teams.

Machine-Readable Feeds

Latest AI Briefings

Latest AI Signals

  • [High] OpenAI launches GPT-5.5, first fully retrained base model since GPT-4.5
    23 April 2026 | OpenAI | Model Releases

    What changed: GPT-5.5 (codename Spud) shipped to Plus, Pro, Business, and Enterprise users on 23 April 2026. API pricing is $5/M input and $30/M output tokens with a 1M context window. GPT-5.5 Pro lists at $30/$180 per million tokens.

    Why it matters: First fully retrained base model since GPT-4.5. Matches GPT-5.4 latency at lower token cost, with stronger autonomous task execution across email, spreadsheets, calendars, and connected apps. Operators running Codex or GPT-4.5-class agents can move the same workflows to a cheaper, more capable substrate today.

    Relevance: AI Growth Engine, Employee Amplification Systems
  • [High] Google Gemini 3.1 Pro leads 13 of 16 benchmarks at one-third of GPT-5.4 cost
    10 April 2026 | Google | Model Releases

    What changed: Gemini 3.1 Pro leads 13 of 16 major benchmarks on the Artificial Analysis Intelligence Index and ties GPT-5.4 Pro on the overall index, at roughly one-third of the API price. The result puts direct pressure on OpenAI enterprise pricing across cost-conscious buyer segments.

    Why it matters: For enterprises using OpenAI at scale, Gemini 3.1 Pro is now a credible substitute with comparable quality at significantly lower cost. The competitive pressure may force OpenAI to revise enterprise pricing.

    Relevance: AI Growth Engine, Employee Amplification Systems
  • [High] Anthropic launches Claude Agent SDK
    9 March 2026 | Anthropic | Agent Systems

    What changed: Standardised framework for deploying production AI agents with built-in tool orchestration and safety guardrails.

    Why it matters: Agent infrastructure is becoming operationally usable for enterprise teams without custom engineering.

    Relevance: Employee Amplification Systems, Secure AI Brain
  • [High] OpenAI GPT-5.4 launches with a 1M-token context window
    5 March 2026 | OpenAI | Model Releases

    What changed: OpenAI launched GPT-5.4 in three variants (Standard, Thinking, Pro) with a 1.05M-token context window and 33% fewer factual errors than GPT-5.2. API pricing starts at $2.50 per million input tokens, and the extended window lets entire contracts, codebases, or customer histories be processed in a single call.

    Why it matters: The 1M context window fundamentally changes what is possible in a single AI interaction. Businesses can now process entire document libraries, codebases, or historical records without chunking, reducing complexity and improving accuracy in document-intensive workflows.

    Relevance: AI Growth Engine, Employee Amplification Systems

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