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Gemini 2.0 Flash Thinking vs Grok-1.5

Gemini 2.0 Flash Thinking leads the LLM Stats Score 16.7 to -2.6.

Google · xAI · Updated for 2026

Which is better?

Gemini 2.0 Flash Thinking leads the overall LLM Stats Score 16.7 to -2.6, ranking #227 overall.

In the 2 individual benchmarks reported for both models, Gemini 2.0 Flash Thinking 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 2.0 Flash Thinking

  • overall performance matters — it scores 16.7 and ranks #227 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results
  • you want the most recent training data — it shipped Jan 2025

Choose Grok-1.5

  • you are already invested in the xAI ecosystem

At a glance

The differences that matter most.

Gemini 2.0 Flash Thinking
Google
Grok-1.5
xAI
Core performance indexes
LLM Stats Score
16.7
#227
-2.6
#348
Reasoning
17.0
#220
-2.2
#338
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

3 reported for Gemini 2.0 Flash Thinking · 9 for Grok-1.5

2 shared

Gemini 2.0 Flash Thinking outperforms in 2 benchmarks (GPQA, MMMU), while Grok-1.5 is better at 0 benchmarks.

Gemini 2.0 Flash Thinking significantly outperforms across most benchmarks.

Sat Oct 03 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Gemini 2.0 Flash Thinking supports multimodal inputs, whereas Grok-1.5 does not.

Gemini 2.0 Flash Thinking can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 2.0 Flash Thinking

Text
Images
Audio
Video

Grok-1.5

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 2.0 Flash Thinking

Proprietary

Closed source

Grok-1.5

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.0 Flash Thinking was released on 2025-01-21, while Grok-1.5 was released on 2024-03-28.

Gemini 2.0 Flash Thinking is 10 months newer than Grok-1.5.

Gemini 2.0 Flash Thinking

Jan 21, 2025

1.7 years ago

9mo newer
Grok-1.5

Mar 28, 2024

2.5 years ago

Knowledge Cutoff

When training data ends

Gemini 2.0 Flash Thinking has a documented knowledge cutoff of 2024-08-01, while Grok-1.5's cutoff date is not specified.

We can confirm Gemini 2.0 Flash Thinking's training data extends to 2024-08-01, but cannot make a direct comparison without Grok-1.5's cutoff date.

Gemini 2.0 Flash Thinking

Aug 2024

Grok-1.5

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini 2.0 Flash Thinking and Grok-1.5 side-by-side, then vote on the output you prefer.

Gemini 2.0 Flash Thinking
✓ Preferred
Grok-1.5
Open in Playground

FAQ

Common questions about Gemini 2.0 Flash Thinking vs Grok-1.5.

Which is better, Gemini 2.0 Flash Thinking or Grok-1.5?

Gemini 2.0 Flash Thinking leads the LLM Stats Score 16.7 to -2.6. Gemini 2.0 Flash Thinking 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 2.0 Flash Thinking compare to Grok-1.5 in benchmarks?

Gemini 2.0 Flash Thinking scores MMMU: 75.4%, GPQA: 74.2%, AIME 2024: 73.3%. 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 2.0 Flash Thinking and Grok-1.5?

Key differences include LLM Stats Score (16.7 vs -2.6), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 2.0 Flash Thinking and Grok-1.5?

Gemini 2.0 Flash Thinking is developed by Google and Grok-1.5 is developed by xAI.

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