GPT-5.6 Sol
Active Parameters
-
Context Length
1.05M
Modality
Multimodal
Architecture
Mixture of Experts (MoE)
License
-
Release Date
9 Jul 2026
Knowledge Cutoff
Feb 2026
Evaluation Benchmarks
Rank
#2
| Benchmark | Score | Rank |
|---|---|---|
Reasoning max | 0.92 | 🥇 1 |
Mathematics max | 0.96 | 🥇 1 |
General max | 0.81 | 🥈 2 |
Coding max | 0.84 | 🥈 2 |
LiveBench Average max | 0.81 | 🥈 2 |
Data Analysis max | 0.80 | ⭐ 4 |
Web Development high | 1619 | ⭐ 6 |
Web Development max | 1619 | ⭐ 6 |
Web Development Standard | 1619 | ⭐ 6 |
Agent Arena high | 0.10 | 6 |
Agentic Coding max | 0.56 | 9 |
General Text high | 1482 | ⭐ 12 |
General Text Standard | 1481 | ⭐ 16 |
Rankings
Overall Rank
#2 🥈
Coding Rank
#5
About GPT-5.6 Sol
OpenAI's flagship GPT-5.6 Sol delivers frontier capabilities in agentic coding, cybersecurity, and complex multi-step reasoning with subagent orchestration in ultra mode.
Technical Specifications
Detailed architecture specifications are limited for proprietary models.
Resources
About GPT-5.6
OpenAI's GPT-5.6 series represents the next-generation frontier intelligence family structured into three tiered variants: Sol (flagship reasoning and autonomous agents), Terra (balanced everyday production workhorse), and Luna (lightweight, ultrafast, cost-effective inference). It introduces new max and ultra (sub-agent coordination) reasoning modes, native programmatic tool calling, a 1M token context window with 128k output tokens, and a February 16, 2026 knowledge cutoff.