The AI arena is free today

Open Superagent

Gemini 1.5 Flash 8B vs Grok-1.5V

Gemini 1.5 Flash 8B and Grok-1.5V are closely matched at -0.8 and -0.8 on the LLM Stats Score.

Google · xAI · Updated for 2026

Which is better?

Gemini 1.5 Flash 8B and Grok-1.5V are closely matched on the overall LLM Stats Score at -0.8 and -0.8.

In the 2 individual benchmarks reported for both models, Gemini 1.5 Flash 8B wins 2; this is a narrower head-to-head signal than the composite indexes.

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

Choose Gemini 1.5 Flash 8B

  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results

Choose Grok-1.5V

  • you want the most recent training data — it shipped Apr 2024

At a glance

The differences that matter most.

Gemini 1.5 Flash 8B
Google
Grok-1.5V
xAI
Core performance indexes
LLM Stats Score
-0.8
#331
-0.8
#332
Reasoning
-0.4
#322
-0.1
#319
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
$0.07 / M
— / M
Output price
$0.30 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Gemini 1.5 Flash 8B
Grok-1.5V
Vision
-2.5#190
-1.7#187
Multimodal
0.2#152
0.7#151
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for Gemini 1.5 Flash 8B · 7 for Grok-1.5V

2 shared

Gemini 1.5 Flash 8B outperforms in 2 benchmarks (MathVista, MMMU), while Grok-1.5V is better at 0 benchmarks.

Gemini 1.5 Flash 8B significantly outperforms across most benchmarks.

Fri Sep 18 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

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

Google
Gemini 1.5 Flash 8B
Input1,048,576 tokens
Output8,192 tokens
xAI
Grok-1.5V
Input- tokens
Output- tokens
Fri Sep 18 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 1.5 Flash 8B and Grok-1.5V support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 1.5 Flash 8B

Text
Images
Audio
Video

Grok-1.5V

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 8B

Proprietary

Closed source

Grok-1.5V

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Flash 8B was released on 2024-03-15, while Grok-1.5V was released on 2024-04-12.

Grok-1.5V is 1 month newer than Gemini 1.5 Flash 8B.

Gemini 1.5 Flash 8B

Mar 15, 2024

2.5 years ago

Grok-1.5V

Apr 12, 2024

2.4 years ago

4w newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash 8B has a documented knowledge cutoff of 2024-10-01, while Grok-1.5V's cutoff date is not specified.

We can confirm Gemini 1.5 Flash 8B's training data extends to 2024-10-01, but cannot make a direct comparison without Grok-1.5V's cutoff date.

Gemini 1.5 Flash 8B

Oct 2024

Grok-1.5V

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 1.5 Flash 8B and Grok-1.5V side-by-side, then vote on the output you prefer.

Gemini 1.5 Flash 8B
✓ Preferred
Grok-1.5V
Open in Playground

FAQ

Common questions about Gemini 1.5 Flash 8B vs Grok-1.5V.

Which is better, Gemini 1.5 Flash 8B or Grok-1.5V?

Gemini 1.5 Flash 8B and Grok-1.5V are closely matched on the LLM Stats Score at -0.8 and -0.8. Gemini 1.5 Flash 8B is made by Google and Grok-1.5V 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 1.5 Flash 8B compare to Grok-1.5V in benchmarks?

Gemini 1.5 Flash 8B scores XSTest: 92.6%, FLEURS: 86.4%, Natural2Code: 75.5%, WMT23: 72.6%, Video-MME: 66.2%. Grok-1.5V scores AI2D: 88.3%, DocVQA: 85.6%, TextVQA: 78.1%, ChartQA: 76.1%, RealWorldQA: 68.7%.

What are the context window sizes for Gemini 1.5 Flash 8B and Grok-1.5V?

Gemini 1.5 Flash 8B supports 1.0M tokens and Grok-1.5V 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 8B and Grok-1.5V?

Key differences include LLM Stats Score (-0.8 vs -0.8). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 1.5 Flash 8B and Grok-1.5V?

Gemini 1.5 Flash 8B is developed by Google and Grok-1.5V is developed by xAI.

Related comparisons