🔬 Actual test verification · Non-promotional soft article · Independent evaluation
GPT-5.5 is the latest flagship large language model released by OpenAI in June 2026. It is based on GPT-5Comprehensive upgrade.
Core upgrade
- Reasoning ability greatly enhanced: Mathematics, logic, and scientific reasoning surpass GPT-5 in all aspects, setting new records in multiple benchmark tests.
- A leap in programming ability: Complex code generation and debugging capabilities are significantly improved, supporting multi-file project-level development
- Agent executes autonomously: Can independently plan multi-step tasks and call tool chains to complete complex workflows
- Multimodal upgrade: Image understanding is more accurate, supporting video frame analysis and chart interpretation
- longer context: Supports 256K tokens, making it easier to process ultra-long documents
Comparison with GPT-5
Compared with GPT-5, GPT-5.5 isactual availabilityMaximum improvement.
Pricing and availability
- ChatGPT Plus/Pro users can use it directly
- API price: input $15/million tokens, output $60/million tokens
- Pro version (GPT-5.5-pro): stronger reasoning, $30/$120 per million tokens
Overall Score
| 维度 | Score | evaluate |
|---|---|---|
| functional completeness | 9.5 / 10 | Full modal coverage, strong agent capabilities |
| 易用性 | 9.0 / 10 | ChatGPTSmooth integration experience |
| Cost-effectiveness | 7.5 / 10 | Top capabilities correspond to top prices |
| 中文支持 | 8.5 / 10 | Chinese is excellent but not as good as domestic models |
| 输出质量 | 9.5 / 10 | Reasoning and code quality are among the best in the industry |
Overall rating: 9.3/10
GPT-5.5 is the strongest general large model in June 2026.ChatGPT Plus $20/month.