Sol High
#258 in Frontier LLMsUnknown · since Limited Preview: 26. Juni 2026; General Availability: 9. Juli 2026 · 2× · last seen Aug 06, 2026
2
Momentum
GPT-5.6 Sol is OpenAI's flagship model in the GPT-5.6 family (alongside Terra and Luna), built for complex tasks such as coding, scientific reasoning, cybersecurity, and long-context agentic workflows. It initially launched as a limited preview for select partner organizations and is now generally available via ChatGPT, Codex, and the OpenAI API. It offers a context window of roughly 1.05 million tokens, supports text and image input with text output, and achieves state-of-the-art scores on agentic coding benchmarks such as Terminal-Bench 2.1.
Momentum trend
22.06.20.09.
Features
| Key Benchmark (%) | Terminal-Bench 2.1: 88.8% (standard), 91.9% (Ultra mode) |
| Context Window (Tokens) | 1,050,000 tokens (128,000 max output tokens) |
| License | Proprietary (closed-source, use governed by OpenAI terms of service) |
| Multimodality | Text and image input, text output, vision, multilingual, tool use (web search, file search, computer use) |
| Platform | ChatGPT (Plus/Pro/Business/Enterprise), OpenAI API, Codex |
| Price per 1M Tokens | $5 input / $30 output (standard context); above 272K tokens: $10/$45 |
| Release Date | Preview June 26, 2026; general availability since July 9, 2026 |