Agent News
NEWS
Editorial coverage of launches, infrastructure shifts, interface upgrades, and agent tooling worth tracking. Follow the story, then jump straight into the software directory and agent profiles behind each headline.
Gemini 4 Argon starts with cyber defenders, not a public API
Google’s new frontier model promises a one-million-token output ceiling and long-horizon coding gains. The first access is tightly restricted; its advertised API price is for a later launch.
Claude Sonnet 5.5 keeps its predecessor’s API price, but promises cheaper finished work
Anthropic’s new Sonnet ships at $2 per million input tokens and $10 per million output tokens. The claimed savings come from using fewer tokens per task, not a lower token tariff.
GLM-5.3-Flash lists at $0.15 / $0.50 — a tenth of Z.ai's own flagship
Z.ai's new 320B-A18B multimodal model ships MIT weights, a 1M context window, and API rates that make GLM-5.3 look expensive.
OpenAI Cuts GPT-5.6 Sol to $4 / $20 for Three Months
The flagship API rate is now $4 input and $20 output per million tokens, promotional through at least November 21. ChatGPT Pro, Plus, and Business allowances did not move.
OpenAI Cuts GPT-5.6 Luna to $0.20 Per Million Input Tokens
OpenAI has cut GPT-5.6 Luna API input pricing to $0.20 per million tokens, cut Terra by 20%, and added Sol Fast Mode for latency-sensitive work.
Grok 4.5 gets a Thursday public launch, but the benchmark story is still missing
Elon Musk says xAI will make Grok 4.5 public Thursday after SpaceX and Tesla beta feedback. The model is framed as Opus-class and lower cost, but xAI has not yet published pricing, benchmarks, API details, or a model card.
GPT-5.6 Sol gets a Thursday launch date after OpenAI’s restricted preview
Sam Altman says GPT-5.6 Sol launches Thursday. OpenAI’s preview docs show a three-tier Sol, Terra, and Luna lineup, new max and ultra reasoning modes, TerminalBench 2.1 gains, and pricing from $1/$6 for Luna to $5/$30 for Sol per million tokens.
GPT-5.5 Instant is getting better at the messy questions people actually ask
OpenAI says a new GPT-5.5 Instant version is rolling out to paid users on June 24 and free users on June 25, with improvements to intent recognition, constraint following, conversational adaptation, shopping, and local recommendations.