Model Comparison

Gemini 1.0 Pro vs Grok-1.5Which is better in 2026?

Grok-1.5 significantly outperforms across most benchmarks.

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

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

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

Choose Gemini 1.0 Pro if…

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

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

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

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

Grok-1.5 significantly outperforms across most benchmarks.

Sat Jul 11 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).

Google
Gemini 1.0 Pro
Input32,760 tokens
Output8,192 tokens
xAI
Grok-1.5
Input- tokens
Output- tokens
Sat Jul 11 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.

Gemini 1.0 Pro

Proprietary

Closed source

Grok-1.5

Proprietary

Closed source

Release Timeline

When each model was launched

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

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

Gemini 1.0 Pro

Feb 15, 2024

2.4 years ago

Grok-1.5

Mar 28, 2024

2.3 years ago

1mo newer

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.

Gemini 1.0 Pro

Feb 2024

Grok-1.5

—

Outputs Comparison

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Key Takeaways

Google
Larger context window (32,760 tokens)
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%)

Detailed Comparison

Interactive Arena

Judge for yourself.

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

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

FAQ

Common questions about Gemini 1.0 Pro vs Grok-1.5.

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

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

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

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

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

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

Who makes Gemini 1.0 Pro and Grok-1.5?

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

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