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Gemini 3.8 Flash Cyber vs GPT-5.6 Cyber

Comparing Gemini 3.8 Flash Cyber and GPT-5.6 Cyber across benchmarks, pricing, and capabilities.

Google · OpenAI · Updated for 2026

Which is better?

Gemini 3.8 Flash Cyber and GPT-5.6 Cyber trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini 3.8 Flash Cyber

  • you want the most recent training data — it shipped Sep 2026

Choose GPT-5.6 Cyber

  • you want predictable pricing at $12.50/M input and $75.00/M output

At a glance

The differences that matter most.

Gemini 3.8 Flash Cyber
Google
GPT-5.6 Cyber
OpenAI
Benchmark wins
—
—
Input price
— / M
$12.50 / M
Output price
— / M
$75.00 / M
Context window
—
400,000

Individual benchmarks

4 reported for Gemini 3.8 Flash Cyber · 0 for GPT-5.6 Cyber

No common benchmarks found

Gemini 3.8 Flash Cyber and GPT-5.6 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

Context Window

Maximum input and output token capacity

Only GPT-5.6 Cyber specifies input context (400,000 tokens). Only GPT-5.6 Cyber specifies output context (128,000 tokens).

Google
Gemini 3.8 Flash Cyber
Input- tokens
Output- tokens
OpenAI
GPT-5.6 Cyber
Input400,000 tokens
Output128,000 tokens
Sun Sep 13 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

GPT-5.6 Cyber supports multimodal inputs, whereas Gemini 3.8 Flash Cyber does not.

GPT-5.6 Cyber can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 3.8 Flash Cyber

Text
Images
Audio
Video

GPT-5.6 Cyber

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 3.8 Flash Cyber

Proprietary

Closed source

GPT-5.6 Cyber

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.8 Flash Cyber was released on 2026-09-02, while GPT-5.6 Cyber was released on 2026-08-10.

Gemini 3.8 Flash Cyber is 1 month newer than GPT-5.6 Cyber.

Gemini 3.8 Flash Cyber

Sep 2, 2026

1 weeks ago

3w newer
GPT-5.6 Cyber

Aug 10, 2026

1 months ago

Knowledge Cutoff

When training data ends

GPT-5.6 Cyber has a documented knowledge cutoff of 2026-02-16, while Gemini 3.8 Flash Cyber's cutoff date is not specified.

We can confirm GPT-5.6 Cyber's training data extends to 2026-02-16, but cannot make a direct comparison without Gemini 3.8 Flash Cyber's cutoff date.

Gemini 3.8 Flash Cyber

—

GPT-5.6 Cyber

Feb 2026

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 3.8 Flash Cyber and GPT-5.6 Cyber side-by-side, then vote on the output you prefer.

Gemini 3.8 Flash Cyber
✓ Preferred
GPT-5.6 Cyber
Open in Playground

FAQ

Common questions about Gemini 3.8 Flash Cyber vs GPT-5.6 Cyber.

Which is better, Gemini 3.8 Flash Cyber or GPT-5.6 Cyber?

Gemini 3.8 Flash Cyber (Google) and GPT-5.6 Cyber (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Gemini 3.8 Flash Cyber compare to GPT-5.6 Cyber in benchmarks?

Gemini 3.8 Flash Cyber scores Gray Swan IPI Benchmark: 94.0%, CyberGym: 86.2%, Google Real-world Vulnerability Discovery: 71.0%, CWE-Bench: 47.2%.

What are the context window sizes for Gemini 3.8 Flash Cyber and GPT-5.6 Cyber?

Gemini 3.8 Flash Cyber supports an unknown number of tokens and GPT-5.6 Cyber supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3.8 Flash Cyber and GPT-5.6 Cyber?

Key differences include multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.8 Flash Cyber and GPT-5.6 Cyber?

Gemini 3.8 Flash Cyber is developed by Google and GPT-5.6 Cyber is developed by OpenAI.

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