The Monthly

The month

The stories that moved it

The Weekly Reviews' top stories of the month, ranked by how many sources reported them and how much they change. Each links to where it was first said.

1. Claude Opus 5.5

   Claude API Release Notes · and 10 more sources

   We've launched Claude Opus 5.5 (claude-opus-5-5), a model for long-running agentic coding and knowledge work. It has a 1M token context window by default, 128k max output tokens, and always-on adaptive thinking, at $4 /…

2. Released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna).

   OpenAI API Changelog · and 7 more sources

   Feature · gpt-6-sol · gpt-6-luna · v1/responses · v1/chat/completions. Released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna). These reasoning models accept text and image inputs and generate text through the Respons…

3. Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS generally available (GA)

   Gemini API Changelog · and 3 more sources

   Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS generally available (GA): Released our next-generation text-to-speech (TTS) audio models and the Gemini API Voices endpoint (/v1beta/voices): Gemini 3.8 Flash TTS (gemin…

4. Grok 4.7

   xAI · and 1 more source

   Grok 4.7, SpaceXAI's frontier model for coding, agentic tasks, and knowledge work, is now available on the xAI API as grok-4.7. It has a 500k context window, text and image inputs with text-only output, and no text outpu…

5. Cache diagnostics is out of beta on the Claude API and no longer requires the cache-diagnosis-2026-04-07 beta header.

   Claude API Release Notes

   Cache diagnostics is out of beta on the Claude API and no longer requires the cache-diagnosis-2026-04-07 beta header. Include the diagnostics object on a Messages request to opt in; requests that still send the header wo…

6. Designing agent-first platforms: What changes when agents do the work

   Microsoft Azure

   The organizations pulling ahead are not simply adding AI to what they already have. They are designing for a different kind of software. The post Designing agent-first platforms: What changes when agents do the work appe…

7. Confused Deputy: The Old Bug That AI Agents Keep Reintroducing

   Auth0

   A category of vulnerability we aimed to eradicate is re-emerging with the rise of AI agents.

8. Build your way: Use any AI agent of your choice in Android Studio

   Android Developers

   Posted by Matthew Warner, Product Manager, Android Developer Experience AI-powered developer tools have become an essential multiplier for engineering productivity, with teams adopting specialized AI coding agents, custo…

Act on this

What stops working next

Models being shut down and versions reaching end of support in the 90 days after Sep 30, with the replacement each vendor recommends. Only dates they state.

And 34 more deadlines at techgazette.com.br/deadlines/

Security desk

Exploited, and down

What shipped, what rose

Models, and what developers starred

From the papers

Research worth the month

1,770 papers printed this month. A selection, each with its own abstract's words; the week's papers by field are at techgazette.com.br/research.

• ChunkRank: Model-Aware Text Chunking and Abstention-Aware Answer Selection for LLM Pipelines
  arXiv cs.CL · Sep 24
• LLM Agents Can Easily Tamper With Their Own Traces
  arXiv cs.CR · Sep 24
• To Trust or Not to Trust: Retrieval-Augmented Fact Checking in Speech
  arXiv cs.LG · Sep 24
• Instrumental Monitor Evasion Emerges Under Ordinary Task Pressure
  arXiv cs.CR · Sep 24
• VietPrism: A large-scale Vietnamese speech and deepfake corpus with diverse dialects and code-switching
  arXiv cs.CL · Sep 24