Model Comparison

Grok-1.5 vs Gemini 1.0 ProWhich is better in 2026?

Grok-1.5 significantly outperforms across most benchmarks.

Verdict: Grok-1.5 vs Gemini 1.0 Pro — which is better?

Grok-1.5 (by xAI) and Gemini 1.0 Pro (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.

Grok-1.5 outperforms in 5 benchmarks (GPQA, MATH, MathVista, MMLU, MMMU), while Gemini 1.0 Pro is better at 0 benchmarks. Grok-1.5 significantly outperforms across most benchmarks.

Choose Grok-1.5 if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • you want the most recent training data — it shipped Mar 2024

Choose Gemini 1.0 Pro if…

  • you want predictable pricing at $0.50/M input and $1.50/M output

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Grok-1.5 outperforms in 5 benchmarks (GPQA, MATH, MathVista, MMLU, MMMU), while Gemini 1.0 Pro is better at 0 benchmarks.

Grok-1.5 significantly outperforms across most benchmarks.

Thu Jul 02 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Gemini 1.0 Pro specifies input context (32,760 tokens). Only Gemini 1.0 Pro specifies output context (8,192 tokens).

xAI
Grok-1.5
Input- tokens
Output- tokens
Google
Gemini 1.0 Pro
Input32,760 tokens
Output8,192 tokens
Thu Jul 02 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Grok-1.5

Proprietary

Closed source

Gemini 1.0 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-1.5 was released on 2024-03-28, while Gemini 1.0 Pro was released on 2024-02-15.

Grok-1.5 is 1 month newer than Gemini 1.0 Pro.

Grok-1.5

Mar 28, 2024

2.3 years ago

1mo newer
Gemini 1.0 Pro

Feb 15, 2024

2.4 years ago

Knowledge Cutoff

When training data ends

Gemini 1.0 Pro has a documented knowledge cutoff of 2024-02-01, while Grok-1.5's cutoff date is not specified.

We can confirm Gemini 1.0 Pro's training data extends to 2024-02-01, but cannot make a direct comparison without Grok-1.5's cutoff date.

Grok-1.5

—

Gemini 1.0 Pro

Feb 2024

Outputs Comparison

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Key Takeaways

xAI
Higher GPQA score (35.9% vs 27.9%)
Higher MATH score (50.6% vs 32.6%)
Higher MathVista score (52.8% vs 46.6%)
Higher MMLU score (81.3% vs 71.8%)
Higher MMMU score (53.6% vs 47.9%)
Google
Larger context window (32,760 tokens)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Grok-1.5 and Gemini 1.0 Pro side-by-side, then vote on the output you prefer.

Grok-1.5
✓ Preferred
Gemini 1.0 Pro
Open in Playground
AI Model Comparison Table
Feature
xAI
Grok-1.5
Google
Gemini 1.0 Pro

FAQ

Common questions about Grok-1.5 vs Gemini 1.0 Pro.

Which is better, Grok-1.5 or Gemini 1.0 Pro?

Grok-1.5 significantly outperforms across most benchmarks. Grok-1.5 is made by xAI and Gemini 1.0 Pro is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Grok-1.5 compare to Gemini 1.0 Pro in benchmarks?

Grok-1.5 scores GSM8k: 90.0%, DocVQA: 85.6%, MMLU: 81.3%, HumanEval: 74.1%, MMMU: 53.6%. Gemini 1.0 Pro scores FLEURS: 93.6%, BIG-Bench: 75.0%, MMLU: 71.8%, WMT23: 71.7%, EgoSchema: 55.7%.

What are the context window sizes for Grok-1.5 and Gemini 1.0 Pro?

Grok-1.5 supports an unknown number of tokens and Gemini 1.0 Pro supports 33K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Grok-1.5 and Gemini 1.0 Pro?

Grok-1.5 is developed by xAI and Gemini 1.0 Pro is developed by Google.

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