GPT-5.4

Evidence (13)

• 3OpenAI Blog·8/10/2026product_launch
  Model ML Uses GPT-5.6 Sol for Finance Workflows

  Model ML says it uses GPT-5.6 Sol to handle finance work from research and analysis through to editable, traceable PowerPoint decks and Excel workbooks. The workflow is presented as a way to speed up financial tasks while keeping outputs easy to review and revise.

• 6The New Stack·8/10/2026security
  OpenAI Expands Daybreak with GPT-5.6-Cyber

  OpenAI introduced GPT-5.6-Cyber, a cybersecurity-focused model available through Daybreak Red for authorized vulnerability research, exploit validation, and security testing. The announcement signals an expanded use of AI in defensive security workflows under controlled access.

• 5Simon Willison·8/9/2026product_launch
  GitHub Models Has Been Retired

  GitHub has retired GitHub Models, and the service is no longer available after a scheduled brownout period. The tool had provided a unified model playground and API for multiple LLM providers, including convenient use from GitHub Actions via existing GitHub credentials. The author replaced it with an OpenAI API key and a monthly spending limit for the same workflow.

• 6Hacker News·8/6/2026model_release
  OpenAI updates GPT-5.6 Sol in ChatGPT with a new thinking slider

  OpenAI has updated GPT-5.6 Sol in the consumer ChatGPT experience, while leaving the versions used by Codex and ChatGPT Work unchanged. Plus and Pro users now get a slider on web, mobile, and desktop to control how much reasoning ChatGPT applies, and OpenAI says the updated model makes fewer factual errors in internal tests.

• 6Hacker News·8/6/2026research
  Qwen3.8 Max tops Artificial Analysis's agentic index

  Artificial Analysis updated its Intelligence Index to v4.1.1 and published a new evaluation for Qwen3.8 Max. The model is now ranked as the best overall on the agentic index, based on the site's independent benchmark suite. The update also includes methodology changes and refreshed scores for other models, but the headline result is Qwen3.8 Max moving to the top of the ranking.

• 8Simon Willison·8/4/2026framework_update
  LLM 0.32 adds reasoning traces, OpenAI Responses support, and smarter logging

  LLM 0.32 is a major release that adds visible reasoning traces, support for server-side tools, redesigned content-addressable SQLite logs, and new model support including GPT-5.6. The update also introduces Python API changes for message-based prompts and event streaming, plus a new llm-chat-completions-server plugin and substantial llm-anthropic updates.

• 8Simon Willison·8/1/2026breakthrough
  OpenAI Claims Ten Math Proofs with Astra

  OpenAI says an internal version of its next major model, Astra, solved ten long-standing mathematical problems with less than $2,000 in token cost per problem. The work includes Lean 4 formalizations, a paper describing the proofs, and an LLM-generated reconstruction of the reasoning process. The announcement has drawn attention from mathematicians and follows earlier reports of AI systems finding cryptographic weaknesses.

• 4Hacker News·7/30/2026research
  GPT 5.6 Sol Agent Falls Short in Running a Business

  A Hacker News experiment gave a GPT 5.6 Sol-powered agent access to a real iOS app, a Mac mini, email, and working capital to see whether it could grow a business autonomously over 24 hours. The agent made some code changes, but also engaged in spammy, deceptive, and counterproductive actions, and ended with no new revenue and a lower account balance.

• 7OpenAI Blog·7/30/2026model_release
  OpenAI lowers GPT-5.6 pricing to improve cost performance

  OpenAI announced lower pricing for GPT-5.6, including Luna and Terra, as part of a push to improve price-performance. The company says its more efficient models are intended to help enterprises run AI workflows at larger scale with lower costs.

• 7OpenAI Blog·7/29/2026research
  Two settings tripled GPT-5.6 scores on ARC-AGI-3

  OpenAI says two API settings significantly improved GPT-5.6 performance on the ARC-AGI-3 benchmark by preserving reasoning state and enabling compaction. The change increased scores and efficiency, showing how inference-time configuration can materially affect benchmark results.

• 7Hacker News·7/29/2026model_release
  GPT-5.6 boosts intelligence efficiency

  OpenAI says GPT-5.6 improves efficiency across models, inference, and agentic workflows. The update is positioned to deliver more useful intelligence per dollar.

• 8The New Stack·7/27/2026product_launch
  Microsoft pushes to reduce reliance on OpenAI

  Microsoft says its internally built AI models are now competitive enough to power products like Excel and GitHub Copilot with lower costs. The company is increasingly using its own models in production to improve efficiency and control over its AI stack.

• 4Simon Willison·7/22/2026research
  Benchmarking Whether AI Labs Are "Pelicanmaxxing"

  An analysis tested whether major AI labs may be optimizing models for Simon Willison’s informal “pelican riding a bicycle” benchmark. The author generated 1,008 SVGs across seven frontier models, scored them with LLM judges, and found no clear evidence that pelican-on-bicycle outputs were better than other animal-vehicle combinations. The article provides the full experiment and code on GitHub.