GPT-5.5 vs GPT-6 Cyber
GPT-5.5 and GPT-6 Cyber are closely matched at 46.7 and 40.8 on the LLM Stats Score. GPT-5.5 is 3.6x cheaper per token.
OpenAI · OpenAI · Updated for 2026
Which is better?
GPT-5.5 and GPT-6 Cyber are closely matched on the overall LLM Stats Score at 46.7 and 40.8.
On price, GPT-5.5 is roughly 3.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-5.5
- cost matters — it's about 3.6x cheaper per token
Choose GPT-6 Cyber
- you want the most recent training data — it shipped Nov 2026
At a glance
The differences that matter most.
Individual benchmarks
28 reported for GPT-5.5 · 1 for GPT-6 Cyber
GPT-5.5 and GPT-6 Cyberdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.5 ($5.00/1M tokens) is 4.0x cheaper than GPT-6 Cyber ($20.00/1M tokens).
For output processing, GPT-5.5 ($30.00/1M tokens) is 3.3x cheaper than GPT-6 Cyber ($100.00/1M tokens).
In conclusion, GPT-6 Cyber is more expensive than GPT-5.5.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 1,050,000 tokens. Both models can generate responses up to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both GPT-5.5 and GPT-6 Cyber support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-5.5
GPT-6 Cyber
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-5.5 was released on 2026-04-23, while GPT-6 Cyber was released on 2026-11-05.
GPT-6 Cyber is 7 months newer than GPT-5.5.
Apr 23, 2026
6 months ago
Nov 5, 2026
1 weeks ago
6mo newerKnowledge Cutoff
When training data ends
GPT-5.5 has a documented knowledge cutoff of 2025-12-01, while GPT-6 Cyber's cutoff date is not specified.
We can confirm GPT-5.5's training data extends to 2025-12-01, but cannot make a direct comparison without GPT-6 Cyber's cutoff date.
Dec 2025
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Provider Availability
GPT-5.5 is available from OpenAI. GPT-6 Cyber is available from OpenAI.
GPT-5.5
GPT-6 Cyber
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5.5 and GPT-6 Cyber side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5.5 vs GPT-6 Cyber.