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OpenRouter announced GPT-5.6 on 2026-07-09 with three flavors

2026-07-09 · 17:32 UTC ·@OpenRouter ·0 min read

Brief

OpenRouter released GPT-5.6 on 2026-07-09 in three variants — Sol (flagship), Terra (balanced), and Luna (fast, low-cost). The team reports early testing found improved token efficiency versus prior models, which they say reduces cost and speeds task completion; an external party labeled 'AA' reportedly corroborates those results.

Why it matters

OpenRouter announced GPT-5.6 on 2026-07-09 with three flavors: Sol (flagship), Terra (balanced), and Luna (fast + low-cost).

Key details

Early internal testing reportedly shows GPT-5.6 models are more token efficient, yielding lower cost and faster time-to-task completion; 'AA's results agree' with those findings.

Source evidence

GPT-5.6 is live on OpenRouter!

Sol (flagship), Terra (balanced), and Luna (fast + low-cost).

In our early testing, the 5.6 models were more token efficient, leading to lower cost and faster time to task completion. AA's results agree.