Model comparison
GPT-5.6-Cyber vs GPT-5.5-Cyber
- Input
- $12.50
- Output
- $75.00
- Context
- 400K
- Released
- 2026-08-10
- Input
- $5.00
- Output
- $30.00
- Context
- 1.05M
- Released
- 2026-05-07
GPT-5.5-Cyber is cheaper on input tokens ($5 vs $12.5 per 1M, 2.5×); GPT-5.5-Cyber has the larger context window (1.05M vs 400K).
Specs and pricing side by side
| Spec | GPT-5.6-Cyber | GPT-5.5-Cyber |
|---|---|---|
| Maker | OpenAI | OpenAIsame |
| Released | 2026-08-10 | 2026-05-07 |
| Context window | 400K | 1.05M |
| Max output | 128K | 128Ksame |
| Input price | $12.50 | $5.00 |
| Output price | $75.00 | $30.00 |
| Parameters | Undisclosed | Undisclosedsame |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision | Text, Visionsame |
| Knowledge cutoff | Feb 2026 | Dec 2025 |
Benchmarks both models report
These two models have no benchmark in common in our registry, so there is no like-for-like score to compare. See each model’s own results: GPT-5.6-Cyber, GPT-5.5-Cyber.
Which one should you pick?
Pick GPT-5.6-Cyber if…
- Your use case is: reach for it when an approved research team needs a model that will engage with authorized vulnerability research, exploit validation and penetration testing.
Pick GPT-5.5-Cyber if…
- Cost matters: input tokens cost 2.5× less ($5 vs $12.5 per 1M).
- You need the longer context (1.05M vs 400K).
- Your use case is: reach for it when a vetted security team needs an authorized model that won't over-refuse on legitimate offensive testing (pentest, red teaming).
FAQ
Which is better, GPT-5.6-Cyber or GPT-5.5-Cyber?
GPT-5.5-Cyber is cheaper on input tokens ($5 vs $12.5 per 1M, 2.5×); GPT-5.5-Cyber has the larger context window (1.05M vs 400K). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How much cheaper is GPT-5.5-Cyber?
GPT-5.6-Cyber: $12.50 input, $75.00 output. GPT-5.5-Cyber: $5.00 input, $30.00 output (list API prices as published by each maker).
What are the context windows of GPT-5.6-Cyber and GPT-5.5-Cyber?
GPT-5.6-Cyber offers 400K with up to 128K output; GPT-5.5-Cyber offers 1.05M with up to 128K output.
Is GPT-5.6-Cyber newer than GPT-5.5-Cyber?
GPT-5.6-Cyber was released 2026-08-10; GPT-5.5-Cyber was released 2026-05-07.