AI Model Profile
GPT-5.6 Sol
GPT-5.6 Sol is OpenAI's frontier model for complex professional work, and the model the bare gpt-5.6 alias resolves to.
Verification & Sources
- Status
- Verified
- Source links
- 2
- Freshness
- Verified July 25, 2026
- Last verified
- July 25, 2026
- Last updated
- July 25, 2026
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Benchmark Caveat
Benchmarks and provider capability notes are directional, not universal rankings. Results can shift with prompts, tool use, latency targets, pricing tier, safety filters, context length, and the workload mix a real team runs.
See the linked official model, docs, model-card, or pricing source for provider-published capability notes.
Best for
Teams that need the highest reasoning tier in the GPT-5.6 family for complex professional and agentic work.
Skip if
Skip if GPT-5.6 Terra or Luna meet the task, since all three share the same context window and max output.
Strengths
OpenAI lists Sol with a 1,050,000-token context window, 128,000 max output tokens, a 16 February 2026 knowledge cutoff, the highest reasoning tier in the family with reasoning-token support, text and image input, and supported function calling.
Weaknesses
Highest per-token cost in the GPT-5.6 family at $30 per million output tokens. Output is text only.
Agent suitability
Useful for agent workflows when the provider supports tool use, long context, structured outputs, or workflow-specific APIs.
Kingy AI take
Use this as a source-backed shortlist candidate, not a universal ranking. Re-check official provider docs and run a task-specific trial before production adoption.
Coding notes
Use official docs and live evals before selecting this model for production coding workflows.
Reasoning notes
Provider capability notes are useful but should be validated on representative prompts and tools.
Creative notes
Use a small creative test set before standardizing outputs for brand, media, or customer-facing work.
Research notes
Track release notes and model lifecycle notices because availability and aliases can change.
API pricing notes
Check the official pricing page before budget decisions; Kingy does not freeze token, credit, or subscription prices in model cards.
License notes
Commercial/API terms apply unless the linked official source states otherwise.
Hardware requirements
Cloud/API model; local hardware requirements are not published as a self-hosted path.
Official Model Links
Model Intelligence Research Map
Use these internal paths to move from this model profile into provider pages, static comparison pages, related Kingy records, and the broader AI launch graph. These are research paths, not rankings.