OpenAI
GPT-5.6
Current
5.6
shipped 3mo · 21 Jul 2026
Shipped as a three-model lineup rather than one flagship.
Specification
- Current
- 5.6 (Sol / Terra / Luna)
- Weights
- Closed
- Shape
- Three tiers, one release
- Access
- API, ChatGPT
Modalities: text, image, audio, tool use
GPT-5.6 — 6-Axis Capability Radar
HEURISTIC ESTIMATEThese scores are rough estimates from category presets, catalog specs, and keywords in release notes. They are not measured benchmarks or test results. Catalog prices and context windows may refer to a different model variant.
Hover or tap an axis to inspect its estimate
Shipping Cadence & Next Drop Forecast
This is an uncalibrated estimate from limited catalog history. A ratio of 100% means one estimated interval has elapsed; it is not a probability. Next-release dates and versions remain unconfirmed.
174 days
±21d variance113 days
Shipped on 2026-07-212.1 drops/yr
2 observed intervals · limited history2027-01-11
Next version: UnannouncedOptional AI cadence commentary
Summarize the recorded history and its limitations. Future releases remain unconfirmed.
Model Version Capability Delta
AI-synthesized architectural jumps, parameter scaling, and capability shifts across releases.
Ready to analyze GPT-5.6 v5.2 vs v5.6
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Version history
3 releases tracked
5.6
major21 Jul 2026 · 3moGPT-5.6 arrives as a lineup: Sol, Terra and Luna.
- Three named variants released together instead of a single flagship.
- Splits reasoning depth, speed and cost across the tiers.
- Marks a shift away from one-model-per-generation naming.
Date basis unconfirmedGeneral link · release source needed ↗5.2
minor18 Feb 2026 · 8mo5.2 tightens routing between fast and thinking modes.
- Less visible mode-switching.
- Lower latency on short turns.
Date basis unconfirmedSource needed5.0
major7 Aug 2025 · 1yGPT-5 replaces the 4-series across ChatGPT.
- Unified router over reasoning and non-reasoning paths.
Date basis unconfirmedSource needed