GPT-5.6 Models by OpenAI
OpenAIProprietary
1 model2026
Details
ResearcherOpenAI
LicenseProprietary
Commercial useCommercial use: conditional
Models1
Released2026
Capabilities
VisionAll models
MultimodalAll models
ReasoningAll models
Function CallingAll models
Tool UseAll models
Code ExecutionAll models
Links
WebsiteAbout
OpenAI's GPT-5.6 generation introduces the Sol, Terra, and Luna tiers. Sol is the flagship preview tier for demanding reasoning, long-horizon coding, agentic workflows, and cybersecurity tasks, while Terra and Luna are positioned as balanced and faster lower-cost tiers pending separate research.
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
1 in view
GPT-5.6 SolCurrent
Use when the workload needs reasoning, tool use, and function calling.
2026-06reasoningtool usefunction calling
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| GPT-5.6 Sol | Use when the workload needs reasoning, tool use, and function calling. | 2026-06 | reasoningtool usefunction calling | Current |
Release Timeline
1 release group2026-06
1 current
GPT-5.6 Sol
Currentreasoningtool usefunction calling
Specifications(1 models)
| Model | Released | Vision | Multimodal | Reasoning | Fn Calling | Tool Use | Code Exec |
|---|---|---|---|---|---|---|---|
| GPT-5.6 Sol | 2026-06 | Yes | Yes | Yes | Yes | Yes | Yes |
Frequently Asked Questions
- What is GPT-5.6 used for?
- GPT-5.6 is used for vision and multimodal work, reasoning, and agent workflows and tool use. The family description and listed model capabilities point to those workloads as the best fit.
- How does GPT-5.6 compare to GPT Realtime 2?
- GPT-5.6 by OpenAI is strongest where you need vision and multimodal work, while GPT Realtime 2 by OpenAI is the closest related family to check for realtime voice. GPT-5.6 has 1 listed variant, while GPT Realtime 2 reaches up to 131k context, so compare the specs and pricing tables before choosing a production model.
- Which GPT-5.6 model should I use?
- If price is the main constraint, use the pricing table first because GPT-5.6 does not have complete provider pricing in the local data. For the most capable/latest local choice, evaluate GPT-5.6 Sol with reasoning, tool use, function calling, and multimodal inputs.
