Model Comparison

Grok-1.5 vs Llama 3.2 90B InstructWhich is better in 2026?

Llama 3.2 90B Instruct significantly outperforms across most benchmarks.

Verdict: Grok-1.5 vs Llama 3.2 90B Instruct — which is better?

Grok-1.5 (by xAI) and Llama 3.2 90B Instruct (by Meta) 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 0 benchmarks, while Llama 3.2 90B Instruct is better at 6 benchmarks (DocVQA, GPQA, MATH, MathVista, MMLU, MMMU). Llama 3.2 90B Instruct significantly outperforms across most benchmarks.

Choose Grok-1.5 if…

  • you are already invested in the xAI ecosystem

Choose Llama 3.2 90B Instruct if…

  • you want the strongest raw capability — it leads on 6 of 6 shared benchmarks
  • you want the most recent training data — it shipped Sep 2024
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Grok-1.5 outperforms in 0 benchmarks, while Llama 3.2 90B Instruct is better at 6 benchmarks (DocVQA, GPQA, MATH, MathVista, MMLU, MMMU).

Llama 3.2 90B Instruct significantly outperforms across most benchmarks.

Mon Aug 03 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Llama 3.2 90B Instruct specifies input context (128,000 tokens). Only Llama 3.2 90B Instruct specifies output context (128,000 tokens).

xAI
Grok-1.5
Input- tokens
Output- tokens
Meta
Llama 3.2 90B Instruct
Input128,000 tokens
Output128,000 tokens
Mon Aug 03 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Llama 3.2 90B Instruct supports multimodal inputs, whereas Grok-1.5 does not.

Llama 3.2 90B Instruct can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok-1.5

Text
Images
Audio
Video

Llama 3.2 90B Instruct

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-1.5 is licensed under a proprietary license, while Llama 3.2 90B Instruct uses Llama 3.2.

License differences may affect how you can use these models in commercial or open-source projects.

Grok-1.5

Proprietary

Closed source

Llama 3.2 90B Instruct

Llama 3.2

Open weights

Release Timeline

When each model was launched

Grok-1.5 was released on 2024-03-28, while Llama 3.2 90B Instruct was released on 2024-09-25.

Llama 3.2 90B Instruct is 6 months newer than Grok-1.5.

Grok-1.5

Mar 28, 2024

2.4 years ago

Llama 3.2 90B Instruct

Sep 25, 2024

1.9 years ago

6mo newer

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→

Key Takeaways

xAI

No standout differentiators in the data we have for this pair.

Meta
Larger context window (128,000 tokens)
Supports multimodal inputs
Has open weights
Higher DocVQA score (90.1% vs 85.6%)
Higher GPQA score (46.7% vs 35.9%)
Higher MATH score (68.0% vs 50.6%)
Higher MathVista score (57.3% vs 52.8%)
Higher MMLU score (86.0% vs 81.3%)
Higher MMMU score (60.3% vs 53.6%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Grok-1.5 and Llama 3.2 90B Instruct side-by-side, then vote on the output you prefer.

Grok-1.5
✓ Preferred
Llama 3.2 90B Instruct
Open in Playground
AI Model Comparison Table
Feature
xAI
Grok-1.5
Meta
Llama 3.2 90B Instruct

FAQ

Common questions about Grok-1.5 vs Llama 3.2 90B Instruct.

Which is better, Grok-1.5 or Llama 3.2 90B Instruct?

Llama 3.2 90B Instruct significantly outperforms across most benchmarks. Grok-1.5 is made by xAI and Llama 3.2 90B Instruct is made by Meta. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Grok-1.5 compare to Llama 3.2 90B Instruct in benchmarks?

Grok-1.5 scores GSM8k: 90.0%, DocVQA: 85.6%, MMLU: 81.3%, HumanEval: 74.1%, MMMU: 53.6%. Llama 3.2 90B Instruct scores AI2D: 92.3%, DocVQA: 90.1%, MGSM: 86.9%, MMLU: 86.0%, ChartQA: 85.5%.

What are the context window sizes for Grok-1.5 and Llama 3.2 90B Instruct?

Grok-1.5 supports an unknown number of tokens and Llama 3.2 90B Instruct supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Grok-1.5 and Llama 3.2 90B Instruct?

Key differences include multimodal support (no vs yes), licensing (Proprietary vs Llama 3.2). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-1.5 and Llama 3.2 90B Instruct?

Grok-1.5 is developed by xAI and Llama 3.2 90B Instruct is developed by Meta.

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