Agent news
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Coverage of AI agent launches, model releases, pricing, and security, with links to related software and agent profiles.
ChatGPT Puts GPT-5.6 Sol on Instant, Unlimited Luna on Free, and Leaves Work and Codex Alone
OpenAI’s August 6, 2026 ChatGPT update unifies paid Instant and reasoning on a retuned Sol, moves Free and Go to Luna with a later unlimited-text window, and keeps agent surfaces on the July models.
Kimi K3 costs $18. Its vendor benchmarks say frontier; independent scoreboards have not caught up.
Kimi K3 costs $3 per 1M uncached input tokens and $15 per 1M output tokens. Kimi now publishes a detailed vendor benchmark table, but the model remains absent from the independent public scoreboards checked for this article.
Theo’s Codex prompt critique gets one big thing right: the harness is part of the model
Theo says OpenAI removed a prescriptive Codex front-end prompt after he raised the issue. That causation remains his firsthand account. The public evidence is the larger point: system prompts, tool rules, and orchestration shape a coding agent as much as the model name on the picker.
Grok 4.5 makes the frontier-model price fight real
Grok 4.5 does not beat GPT-5.6 Sol or Claude Fable 5 outright. The story is price-performance: near-frontier agent scores, $2/$6 API pricing, and token-efficiency claims that could make it a practical choice for cost-sensitive coding and tool-heavy workflows.
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.
OpenAI’s GPT-5.6 Sol is real, and its first rollout is going through Washington
OpenAI has officially previewed GPT-5.6 Sol, Terra, and Luna. The launch starts with trusted partners at the U.S. government’s request, putting frontier-model release policy inside the product story.