A CSET researcher discussed the lack of transparency around how the U.S. government evaluates and approves public releases of advanced AI models from companies like OpenAI and Anthropic. No specific details about the government's approval criteria or process have been made public, though Anthropic mentioned developing classifiers to detect jailbreak attempts and implementing defense-in-depth strategies. The opaque nature of these reviews raises questions about whether current safeguards adequately protect against risks from frontier models.
Simon Willison's Weblog·3 months ago·
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● 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.
OpenAI is making GPT-Live-1 the default voice model for Go, Plus, and Pro subscription tiers. Free users will receive GPT-Live-1 mini, while Business, Enterprise, and Education users will not have access to Live at launch. This tiering means paid subscribers get the full-capability voice model while other user categories face either reduced functionality or no access.
OpenAI will release GPT-6 in approximately one month, replacing the 5.x model line with a substantially larger pretraining dataset designed to compete with Anthropic's Fable models. GPT-5.6 marks the final update in the current generation. The shift indicates OpenAI is advancing its development cycle to maintain competitive positioning against rival AI labs.
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