Model Comparison

Gemini 1.5 Flash vs Gemini 3.5 Flash CyberWhich is better in 2026?

Comparing Gemini 1.5 Flash and Gemini 3.5 Flash Cyber across benchmarks, pricing, and capabilities.

Verdict: Gemini 1.5 Flash vs Gemini 3.5 Flash Cyber — which is better?

Gemini 1.5 Flash (by Google) and Gemini 3.5 Flash Cyber (by Google) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Choose Gemini 1.5 Flash if…

  • you want predictable pricing at $0.15/M input and $0.60/M output

Choose Gemini 3.5 Flash Cyber if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Gemini 1.5 Flash and Gemini 3.5 Flash Cyberdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Gemini 1.5 Flash specifies input context (1,048,576 tokens). Only Gemini 1.5 Flash specifies output context (8,192 tokens).

Google
Gemini 1.5 Flash
Input1,048,576 tokens
Output8,192 tokens
Google
Gemini 3.5 Flash Cyber
Input- tokens
Output- tokens
Wed Jul 22 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Flash supports multimodal inputs, whereas Gemini 3.5 Flash Cyber does not.

Gemini 1.5 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 1.5 Flash

Text
Images
Audio
Video

Gemini 3.5 Flash 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 1.5 Flash

Proprietary

Closed source

Gemini 3.5 Flash Cyber

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Flash was released on 2024-05-01, while Gemini 3.5 Flash Cyber was released on 2026-07-21.

Gemini 3.5 Flash Cyber is 27 months newer than Gemini 1.5 Flash.

Gemini 1.5 Flash

May 1, 2024

2.2 years ago

Gemini 3.5 Flash Cyber

Jul 21, 2026

0 days ago

2.2yr newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash has a documented knowledge cutoff of 2023-11-01, while Gemini 3.5 Flash Cyber's cutoff date is not specified.

We can confirm Gemini 1.5 Flash's training data extends to 2023-11-01, but cannot make a direct comparison without Gemini 3.5 Flash Cyber's cutoff date.

Gemini 1.5 Flash

Nov 2023

Gemini 3.5 Flash Cyber

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Larger context window (1,048,576 tokens)
Supports multimodal inputs
Google

No standout differentiators in the data we have for this pair.

GoogleGemini 1.5 Flash
GoogleGemini 3.5 Flash Cyber
Compare in Playground

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini 1.5 Flash and Gemini 3.5 Flash Cyber side-by-side, then vote on the output you prefer.

Gemini 1.5 Flash
✓ Preferred
Gemini 3.5 Flash Cyber
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini 1.5 Flash
Google
Gemini 3.5 Flash Cyber

FAQ

Common questions about Gemini 1.5 Flash vs Gemini 3.5 Flash Cyber.

Which is better, Gemini 1.5 Flash or Gemini 3.5 Flash Cyber?

Gemini 1.5 Flash (Google) and Gemini 3.5 Flash Cyber (Google) 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 1.5 Flash compare to Gemini 3.5 Flash Cyber in benchmarks?

Gemini 1.5 Flash scores XSTest: 97.0%, FLEURS: 90.4%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%. Gemini 3.5 Flash Cyber scores CyberGym: 83.2%.

What are the context window sizes for Gemini 1.5 Flash and Gemini 3.5 Flash Cyber?

Gemini 1.5 Flash supports 1.0M tokens and Gemini 3.5 Flash Cyber supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 1.5 Flash and Gemini 3.5 Flash Cyber?

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

Related comparisons