Simon Willison's Weblog·3 months ago·
34
● 6 sources
OpenAI released three new GPT-5.6 models—Luna, Terra, and Sol—with input/output token prices of $1/$6, $2.50/$15, and $5/$30 respectively. On Agents' Last Exam benchmark measuring long-running professional workflows across 55 fields, GPT-5.6 Sol scored 53.6 compared to Claude Fable 5's 40.5, while Luna and Terra matched Fable 5's performance at one-sixteenth the cost. The models include new API features for programmatic tool composition, multi-agent spawning, and explicit prompt cache breakpoints, expanding capabilities for agentic workflows.
Yahia launched Context.dev, a YC S26 startup offering an API that converts web pages into structured data formats (Markdown, JSON, extracted images) for AI agents and applications. The API extracts company metadata, pricing information, and custom-defined data structures from any public website, with configurable caching to avoid overwhelming servers. Developers can now build chatbots, enrichment pipelines, and AI agents that automatically reason about web content without handling raw HTML or writing custom scrapers.
ChatGPT Work is an agent designed to execute tasks across multiple applications and files while maintaining focus on a single project for extended periods. The agent can operate for hours on sustained projects without losing context or requiring manual intervention between steps. Users can now delegate complex, multi-step work to ChatGPT rather than managing each application switch and file operation manually.
Every AI story that matters,
in your inbox by 8am.
TLDRocket reads all relevant sources, removes duplicate coverage, and summarises the
day in two minutes. Follow companies and topics for alerts, or get the
briefing in Slack. Free, no spam, unsubscribe anytime.
Reading TLDRocket needs no cookies, and the readership counts we rely on come from
our own cookieless analytics. Google Analytics is the exception: it sets cookies and
reports to Google, so it stays switched off until you allow it. You can change your
mind any time from “Cookie settings” in the footer.
Strictly necessary
Session security and form protection (tldrocket-session,
XSRF-TOKEN, 2 hours). The site cannot work without them,
so they need no consent.
Always on
Google Analytics 4 (_ga,
_ga_<id>, up to 2 years). Measures which
stories and sections readers use. Google acts as a third-party processor and may
store the data outside the EU. No advertising, no profiling, no data sold.
