Artificial Intelligence Blogs

By Nathan Gao

Short posts on models, agents, APIs, and the companies building them

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Search results: “2025”

130 entries

December 2025

November 2025

Claude’s Character

Anthropic posted “Claude’s Character.” A quick update for the record.

Anthropic

Toy Models of Superposition

Anthropic posted “Toy Models of Superposition.” A quick update for the record.

Anthropic

Alignment Research

Anthropic posted “Alignment Research.” A quick update for the record.

Anthropic

Building more with GPT-5.1-Codex-Max

OpenAI announced “Building more with GPT-5.1-Codex-Max.” This one looks larger than a routine product note.

OpenAILonger read

GPT-5.1-Codex-Max System Card

OpenAI announced “GPT-5.1-Codex-Max System Card.” This one looks larger than a routine product note.

OpenAILonger read

OpenAI releases IndQA

OpenAI announced “Introducing IndQA.” This one looks larger than a routine product note.

OpenAILonger read

October 2025

OpenAI releases gpt-oss-safeguard

OpenAI announced “Introducing gpt-oss-safeguard.” This one looks larger than a routine product note.

OpenAILonger read

Claude for Life Sciences

Anthropic posted “Claude for Life Sciences.” A quick update for the record.

Anthropic

September 2025

Anthropic releases Claude 4

Anthropic announced “Introducing Claude 4.” This one looks larger than a routine product note.

AnthropicLonger read

Claude 3.7 Sonnet and Claude Code

Anthropic announced “Claude 3.7 Sonnet and Claude Code.” This one looks larger than a routine product note.

AnthropicLonger read

August 2025

Nous Research releases Hermes 4

Hermes 4 combined open-weight reasoning with general instruction following across several model sizes.

Nous Research: Hermes 4 technical reportLonger read

July 2025

OpenAI launches ChatGPT agent

OpenAI launched ChatGPT agent on July 17, 2025, allowing the system to operate tools and complete multi-step tasks.

OpenAILonger read