OpenAI shipped GPT-5.6 as a three-tier family—and attached the biggest claims to efficiency.
Sol, Terra, and Luna are generally available with new max and multi-agent settings, but the launch evidence is still dominated by OpenAI's own evaluations.
Verified 5:31 AM PDT · 1 original sources
The evidence
What the reporting establishes
What happened
OpenAI made GPT-5.6 Sol, Terra, and Luna generally available on July 9. It priced the models at $5/$30, $2.50/$15, and $1/$6 per million input/output tokens respectively, and added higher-compute max and multi-agent ultra modes for demanding work.
Why it matters
The release turns the frontier-model contest into a portfolio and unit-economics contest. If smaller tiers deliver near-frontier work at materially lower cost, buyers can move more agentic workloads from experiments into routine operations.
The caveat
Performance, safety, and cost comparisons are company claims from an interested primary source. Benchmark leadership does not establish reliability or economic advantage in a buyer's own workflow.
What to watch
Independent reproductions of coding, browser, cyber, science, latency, and total-cost results; real error rates on long-running work; and whether multi-agent gains survive outside curated tasks.
Audit the story
Original sources
Company claims remain company claims. Follow the reporting and judge the evidence directly.
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