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OpenAI GPT-5.6 Sol Terra Luna tiered models
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OpenAI released GPT-5.6 as a limited preview on June 26, 2026, comprising three tiered models—Sol (flagship), Terra (medium-tier), and Luna (fast/affordable)—after the White House requested a staggered rollout. The models emphasize coding, cybersecurity, and biology capabilities, with Sol priced at $5 per million input tokens and $30 per million output tokens, roughly half Anthropic's pricing.
- Three-tier model family: Sol (flagship), Terra (high-volume work), Luna (fast and affordable)
- Restricted to trusted partners and US government-vetted users; limited preview only
- Specialized capabilities in coding, cybersecurity, biology, and long-horizon agentic tasks
- Sol pricing: $5/M input tokens, $30/M output tokens—nearly 50% cheaper than Anthropic
- White House requested delayed rollout; OpenAI stated restrictions shouldn't become long-term default
[HN]hacker news1
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[BLG]blog/rss7
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