Model Comparison

Grok-2 vs Nova ProWhich is better in 2026?

Grok-2 shows notably better performance in the majority of benchmarks. Nova Pro is 2.9x cheaper per token.

Verdict: Grok-2 vs Nova Pro — which is better?

Grok-2 (by xAI) and Nova Pro (by Amazon) 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-2 outperforms in 4 benchmarks (DocVQA, GPQA, MMLU, MMMU), while Nova Pro is better at 2 benchmarks (HumanEval, MATH). Grok-2 shows notably better performance in the majority of benchmarks.

On price, Nova Pro is roughly 2.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Nova Pro also accepts a larger context window (300,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Grok-2 if…

  • you want the strongest raw capability — it leads on 4 of 6 shared benchmarks

Choose Nova Pro if…

  • cost matters — it's about 2.9x cheaper per token
  • you process long inputs — it offers a 300,000 token context window
  • you want the most recent training data — it shipped Nov 2024

Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Grok-2 outperforms in 4 benchmarks (DocVQA, GPQA, MMLU, MMMU), while Nova Pro is better at 2 benchmarks (HumanEval, MATH).

Grok-2 shows notably better performance in the majority of benchmarks.

Wed Jul 22 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Nova Pro costs less

For input processing, Grok-2 ($2.00/1M tokens) is 2.5x more expensive than Nova Pro ($0.80/1M tokens).

For output processing, Grok-2 ($10.00/1M tokens) is 3.1x more expensive than Nova Pro ($3.20/1M tokens).

In conclusion, Grok-2 is more expensive than Nova Pro.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Wed Jul 22 2026 • llm-stats.com
xAI
Grok-2
Input tokens$2.00
Output tokens$10.00
Best providerxAI
Amazon
Nova Pro
Input tokens$0.80
Output tokens$3.20
Best providerAWS Bedrock
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Nova Pro accepts 300,000 input tokens compared to Grok-2's 128,000 tokens. Nova Pro can generate longer responses up to 300,000 tokens, while Grok-2 is limited to 8,000 tokens.

xAI
Grok-2
Input128,000 tokens
Output8,000 tokens
Amazon
Nova Pro
Input300,000 tokens
Output300,000 tokens
Wed Jul 22 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Grok-2 and Nova Pro support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Grok-2

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-2

Proprietary

Closed source

Nova Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-2 was released on 2024-08-13, while Nova Pro was released on 2024-11-20.

Nova Pro is 3 months newer than Grok-2.

Grok-2

Aug 13, 2024

1.9 years ago

Nova Pro

Nov 20, 2024

1.7 years ago

3mo 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

Provider Availability

Grok-2 is available from xAI. Nova Pro is available from Bedrock.

Grok-2

xai logo
xAI
Input Price:Input: $2.00/1MOutput Price:Output: $10.00/1M

Nova Pro

bedrock logo
AWS Bedrock
Input Price:Input: $0.80/1MOutput Price:Output: $3.20/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Higher DocVQA score (93.6% vs 93.5%)
Higher GPQA score (56.0% vs 46.9%)
Higher MMLU score (87.5% vs 85.9%)
Higher MMMU score (66.1% vs 61.7%)
Amazon
Larger context window (300,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher HumanEval score (89.0% vs 88.4%)
Higher MATH score (76.6% vs 76.1%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Grok-2 and Nova Pro side-by-side, then vote on the output you prefer.

Grok-2
✓ Preferred
Nova Pro
Open in Playground
AI Model Comparison Table
Feature
xAI
Grok-2
Amazon
Nova Pro

FAQ

Common questions about Grok-2 vs Nova Pro.

Which is better, Grok-2 or Nova Pro?

Grok-2 shows notably better performance in the majority of benchmarks. Grok-2 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-2 compare to Nova Pro in benchmarks?

Grok-2 scores DocVQA: 93.6%, HumanEval: 88.4%, MMLU: 87.5%, MATH: 76.1%, MMLU-Pro: 75.5%. Nova Pro scores ARC-C: 94.8%, GSM8k: 94.8%, DocVQA: 93.5%, IFEval: 92.1%, ChartQA: 89.2%.

Is Grok-2 cheaper than Nova Pro?

Nova Pro is 2.5x cheaper for input tokens. Grok-2 costs $2.00/M input and $10.00/M output via xai. Nova Pro costs $0.80/M input and $3.20/M output via bedrock.

What are the context window sizes for Grok-2 and Nova Pro?

Grok-2 supports 128K 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-2 and Nova Pro?

Key differences include context window (128K vs 300K), input pricing ($2.00 vs $0.80/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-2 and Nova Pro?

Grok-2 is developed by xAI and Nova Pro is developed by Amazon.

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