AI Infrastructure Deep-Dive — September 22, 2026

Findings

1. [1] 2026-09-23 SF October 14th: A Birds of a Feather Session on Agentic Engineering

   SF October 14th: A Birds of a Feather Session on Agentic Engineering I'm hosting an evening event with Jesse Vincent in San Francisco on Wednesday 14th October for people who are building weird and interesting things with and on top of coding agents. Think of it as an agentic show-and-tell: ​Compare notes with other builders and experimenters on things you’re…

2. [2] 2026-09-22 Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war

   Yesterday was Grok 4.7 (pelicans) and MiMo v2.6 Flash/Pro (more pelicans). Today Anthropic released Claude Opus 5.5, and around an hour later OpenAI released GPT-6 Sol and GPT-6 Luna. It's going to take a while to get a good read… Comparing different model vendors by how well they draw a pelican riding a bicycle may not make much sense now (if it ever did), but I'm still finding value in using them for comparisons of the same model families at…

3. [3] 2026-09-22 llm 0.36

   Release: llm 0.36 New OpenAI models: gpt-6-sol for GPT-6 Sol and gpt-6-luna for GPT-6 Luna. #1702 Model plugins can now declare supports_conversation = False for models that only accept single-turn prompts. LLM raises llm.ConversationNotSupported when these models receive assistant or tool history, and llm chat rejects them before starting a session. See Models that do not support conversations. The first…

4. [4] 2026-09-22 Quoting @therealcornpop

   Hey, you know it's like super obvious if you're using AI to write your scripts for TikTok and YouTube, right? […] It's not just the general AI-isms of "it's not X, it's Y", or the rule of three, or the really weird broken staccato-like way of writing where you just say a lot of things with all these punctuation marks.…

5. [5] 2026-09-22 llm-anthropic 0.29

   Release: llm-anthropic 0.29 Adds support for Claude Opus 5.5: llm -m claude-opus-5.5 "prompt goes here" Tags: llm, anthropic

6. [6] 2026-09-22 llm-typesafe 0.1a0

   Release: llm-typesafe 0.1a0 I built this new plugin for LLM to add support for TypeSafe AI's new Jev model. Install it like this: llm install llm-typesafe Then set an API key (get one here, the waitlist seems to move pretty fast): llm keys set typesafe # Paste key And now you can ask yes/no "noul" questions like this: llm -m…

7. [7] 2026-09-21 Jev introduces a new shape of LLM – System One, aka Decision Models

   Last week TypeSafe AI unveiled Jev, their first example of a new category of model that they are calling "System One models" (I'm with Maggie Appleton, I think "decision models" is a better name for these). Jev is an interesting variant on the usual LLM format: it still accepts text inputs, but instead of text output it returns floating point…

Sources

1. [1] SF October 14th: A Birds of a Feather Session on Agentic Engineering
2. [2] Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war
3. [3] llm 0.36
4. [4] Quoting @therealcornpop
5. [5] llm-anthropic 0.29
6. [6] llm-typesafe 0.1a0
7. [7] Jev introduces a new shape of LLM – System One, aka Decision Models