The AI arena is free today

Open Superagent

Gemini 3.8 Flash Cyber vs Grok-1.5

Gemini 3.8 Flash Cyber leads the LLM Stats Score 42.7 to -2.4.

Google · xAI · Updated for 2026

Which is better?

Gemini 3.8 Flash Cyber leads the overall LLM Stats Score 42.7 to -2.4, ranking #44 overall.

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

Choose Gemini 3.8 Flash Cyber

  • overall performance matters — it scores 42.7 and ranks #44 on LLM Stats
  • your work emphasizes coding — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026

Choose Grok-1.5

  • you are already invested in the xAI ecosystem

At a glance

The differences that matter most.

Gemini 3.8 Flash Cyber
Google
Grok-1.5
xAI
Core performance indexes
LLM Stats Score
42.7
#44
-2.4
#326
Coding
36.1
#25
-0.8
#235
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

4 reported for Gemini 3.8 Flash Cyber · 9 for Grok-1.5

No common benchmarks found

Gemini 3.8 Flash Cyber and Grok-1.5don'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

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

Grok-1.5

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.8 Flash Cyber was released on 2026-09-02, while Grok-1.5 was released on 2024-03-28.

Gemini 3.8 Flash Cyber is 30 months newer than Grok-1.5.

Gemini 3.8 Flash Cyber

Sep 2, 2026

0 days ago

2.4yr newer
Grok-1.5

Mar 28, 2024

2.4 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

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 Grok-1.5 side-by-side, then vote on the output you prefer.

Gemini 3.8 Flash Cyber
✓ Preferred
Grok-1.5
Open in Playground

FAQ

Common questions about Gemini 3.8 Flash Cyber vs Grok-1.5.

Which is better, Gemini 3.8 Flash Cyber or Grok-1.5?

Gemini 3.8 Flash Cyber leads the LLM Stats Score 42.7 to -2.4. Gemini 3.8 Flash Cyber is made by Google and Grok-1.5 is made by xAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 3.8 Flash Cyber compare to Grok-1.5 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%. Grok-1.5 scores GSM8k: 90.0%, DocVQA: 85.6%, MMLU: 81.3%, HumanEval: 74.1%, MMMU: 53.6%.

What are the main differences between Gemini 3.8 Flash Cyber and Grok-1.5?

Key differences include LLM Stats Score (42.7 vs -2.4). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.8 Flash Cyber and Grok-1.5?

Gemini 3.8 Flash Cyber is developed by Google and Grok-1.5 is developed by xAI.

Related comparisons