Comparison · Updated Jul 27, 2026
GPT-4 vs GPT-5
Generational comparison between GPT-4 (2023) and GPT-5 (2025).
Model A
GPT-4
Multimodal successor to GPT-3.5 with substantial gains on reasoning benchmarks.
Mar 14, 2023
Model B
GPT-5
OpenAI's next-generation flagship model succeeding GPT-4o.
Aug 7, 2025
Differences
| Attribute | GPT-4 | GPT-5 |
|---|---|---|
| Release | March 2023 | August 2025 |
| Context | 8K | 400K |
| Multimodal | Text + image | Text + image |
Analysis
GPT-5 expands the context window from 8K to 400K tokens, unifies reasoning modes and improves coding and tool use over GPT-4, while GPT-4o remains a strong multimodal option in between.