Breaking

Polymarket Prices GPT-5.6 July 9 Public Release at 76%

July 7, 2026 at 09:34 EDT

Foundation Models

On the prediction market Polymarket, the probability that OpenAI's next model "GPT-5.6" will reach general public release on Thursday, July 9 is trading around 76%. The model only entered limited preview in late June, and OpenAI has not yet announced an official general-availability date.

June 2026 · OpenAI

GPT-5.6 Eyes a Public Launch — Markets Bet on This Thursday

Already in limited preview since June 26, OpenAI's three-model family (Sol, Terra, Luna) faces a prediction market putting ~80% odds on a broad public rollout within the week — pending U.S. government safety review.

~80%

Polymarket odds of a public release this Thursday

~20

Government-approved partners with current access

Models in the lineup: Sol, Terra, Luna

TerminalBench 2.1 — Coding Benchmark

Higher is better. GPT-5.6 Sol variants edge past the leading Claude model.

88.0%

Claude
Mythos 5

88.8%

GPT-5.6
Sol

91.9%

GPT-5.6
Sol Ultra

Sol · Flagship

Specialized in coding, science and cybersecurity.

Terra · Balanced

GPT-5.5-level performance at about half the cost.

Luna · Fast

The fastest and cheapest tier of the family.

Efficiency gain

Sol cut output tokens by up to 80% in one example.

Improved token efficiency reinforces GPT-5.6's advantage on cyber and agentic tasks like ExploitGym and SEC-Bench Pro.

What testers praise

Markedly better instruction-following vs GPT-5.5
Proactively fixes edge cases and bugs
Accurate one-shot capture of intent
Terra: 5.5-level results at ~half the price

What worries them

Terra/Luna gains smaller than benchmarks imply
More mistakes in real workflows
Tighter safety feels less flexible
Benchmarks may be selective vs Mythos/Fable

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