OpenAIAnthropicGooglexAIPerplexity
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GPT-5.5 Instant becomes the ChatGPT default.
The read
New default model cuts hallucinations 52.5% on high-stakes prompts, answers tighter with 30% fewer words, and pulls context from past chats, files, and connected Gmail.
The frame
Memory plus connected Gmail moves ChatGPT from session tool to operating layer for personal knowledge work.
Primary source
OpenAI →Keep reading
See what Nova3 builds →Related updates
- Jun 06, 2026Anthropic updated prompt caching to automatically read from the longest previously cached prefix when breakpoints are set.
- Jun 06, 2026Anthropic optimized prompt caching support in the Message Batches API to improve cache hit rates.
- Jun 06, 2026Anthropic added a delete endpoint to the Message Batches API for managing batch processing tasks.
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