GPT-5.5 vs GPT-5.4
How GPT-5.5 (OpenAI) and GPT-5.4 (OpenAI) compare on price, context window and best-fit use case.
In short: GPT-5.5 is best for Highest-stakes reasoning, complex agents, and frontier coding tasks where capability outweighs cost, while GPT-5.4 suits Most production apps wanting near-flagship quality at roughly half the flagship price. On price it's $5.00 vs $2.50 per 1M input tokens; on context, ~1.05M tokens (128K max output) vs ~1M tokens (922K input, 128K output).
| Spec | GPT-5.5 | GPT-5.4 |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | ~1.05M tokens (128K max output) | ~1M tokens (922K input, 128K output) |
| Input price /1M | $5.00 | $2.50 |
| Output price /1M | $30.00 | $15.00 |
| Modalities | text, image | text, image |
| Best for | Highest-stakes reasoning, complex agents, and frontier coding tasks where capability outweighs cost. | Most production apps wanting near-flagship quality at roughly half the flagship price. |
GPT-5.5
- State-of-the-art reasoning and agentic workflows
- 1M+ context window
- Strong coding and tool use
- Multimodal (text + image input)
GPT-5.4
- Excellent price-to-performance
- Strong reasoning and coding
- 1M context
- Mature ecosystem and tooling