The Ultimate ChatGPT 5 Model Comparison: GPT-5.0 to GPT-5.6
OpenAI made GPT-5.6 public on July 9, 2026, and it is now the most capable ChatGPT model you can actually run. The flagship Sol tier scores 88.8% on Terminal-Bench 2.1 (and 91.9% in its Sol Ultra high-effort mode), edging GPT-5.5’s own 88.0% on the same agentic-coding test, and it ships alongside two cheaper tiers, Terra […]
