Model Comparison

Grok-1.5 vs Nova Pro

Nova Pro significantly outperforms across most benchmarks.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

Grok-1.5 outperforms in 0 benchmarks, while Nova Pro is better at 7 benchmarks (DocVQA, GPQA, GSM8k, HumanEval, MATH, MMLU, MMMU).

Nova Pro significantly outperforms across most benchmarks.

Fri May 15 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Nova Pro specifies input context (300,000 tokens). Only Nova Pro specifies output context (300,000 tokens).

xAI
Grok-1.5
Input- tokens
Output- tokens
Amazon
Nova Pro
Input300,000 tokens
Output300,000 tokens
Fri May 15 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Nova Pro supports multimodal inputs, whereas Grok-1.5 does not.

Nova Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok-1.5

Text
Images
Audio
Video

Nova Pro

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.

Grok-1.5

Proprietary

Closed source

Nova Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-1.5 was released on 2024-03-28, while Nova Pro was released on 2024-11-20.

Nova Pro is 8 months newer than Grok-1.5.

Grok-1.5

Mar 28, 2024

2.1 years ago

Nova Pro

Nov 20, 2024

1.5 years ago

7mo 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.

Amazon
Larger context window (300,000 tokens)
Supports multimodal inputs
Higher DocVQA score (93.5% vs 85.6%)
Higher GPQA score (46.9% vs 35.9%)
Higher GSM8k score (94.8% vs 90.0%)
Higher HumanEval score (89.0% vs 74.1%)
Higher MATH score (76.6% vs 50.6%)
Higher MMLU score (85.9% vs 81.3%)
Higher MMMU score (61.7% vs 53.6%)

Detailed Comparison

AI Model Comparison Table
Feature
xAI
Grok-1.5
Amazon
Nova Pro

FAQ

Common questions about Grok-1.5 vs Nova Pro.

Which is better, Grok-1.5 or Nova Pro?

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

How does Grok-1.5 compare to Nova Pro in benchmarks?

Grok-1.5 scores GSM8k: 90.0%, DocVQA: 85.6%, MMLU: 81.3%, HumanEval: 74.1%, MMMU: 53.6%. Nova Pro scores ARC-C: 94.8%, GSM8k: 94.8%, DocVQA: 93.5%, IFEval: 92.1%, ChartQA: 89.2%.

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

Grok-1.5 supports an unknown number of tokens and Nova Pro supports 300K 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 Nova Pro?

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

Who makes Grok-1.5 and Nova Pro?

Grok-1.5 is developed by xAI and Nova Pro is developed by Amazon.