Model Comparison

Nova Pro vs o3Which is better in 2026?

o3 significantly outperforms across most benchmarks. Nova Pro is 2.5x cheaper per token.

Verdict: Nova Pro vs o3 — which is better?

Nova Pro (by Amazon) and o3 (by OpenAI) 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.

Nova Pro outperforms in 0 benchmarks, while o3 is better at 2 benchmarks (GPQA, MMMU). o3 significantly outperforms across most benchmarks.

On price, Nova Pro is roughly 2.5x 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 Nova Pro if…

  • cost matters — it's about 2.5x cheaper per token
  • you process long inputs — it offers a 300,000 token context window

Choose o3 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Apr 2025

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Nova Pro outperforms in 0 benchmarks, while o3 is better at 2 benchmarks (GPQA, MMMU).

o3 significantly outperforms across most benchmarks.

Tue Jul 28 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Nova Pro costs less

For input processing, Nova Pro ($0.80/1M tokens) is 2.5x cheaper than o3 ($2.00/1M tokens).

For output processing, Nova Pro ($3.20/1M tokens) is 2.5x cheaper than o3 ($8.00/1M tokens).

In conclusion, o3 is more expensive than Nova Pro.*

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

Lowest available price from all providers
Tue Jul 28 2026 • llm-stats.com
Amazon
Nova Pro
Input tokens$0.80
Output tokens$3.20
Best providerAWS Bedrock
OpenAI
o3
Input tokens$2.00
Output tokens$8.00
Best providerOpenAI
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 o3's 200,000 tokens. Nova Pro can generate longer responses up to 300,000 tokens, while o3 is limited to 100,000 tokens.

Amazon
Nova Pro
Input300,000 tokens
Output300,000 tokens
OpenAI
o3
Input200,000 tokens
Output100,000 tokens
Tue Jul 28 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Nova Pro and o3 support multimodal inputs.

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

Nova Pro

Text
Images
Audio
Video

o3

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.

Nova Pro

Proprietary

Closed source

o3

Proprietary

Closed source

Release Timeline

When each model was launched

Nova Pro was released on 2024-11-20, while o3 was released on 2025-04-16.

o3 is 5 months newer than Nova Pro.

Nova Pro

Nov 20, 2024

1.7 years ago

o3

Apr 16, 2025

1.3 years ago

4mo newer

Knowledge Cutoff

When training data ends

o3 has a documented knowledge cutoff of 2024-05-31, while Nova Pro's cutoff date is not specified.

We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without Nova Pro's cutoff date.

Nova Pro

—

o3

May 2024

Provider Availability

Nova Pro is available from Bedrock. o3 is available from OpenAI.

Nova Pro

bedrock logo
AWS Bedrock
Input Price:Input: $0.80/1MOutput Price:Output: $3.20/1M

o3

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $8.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Amazon
Larger context window (300,000 tokens)
Less expensive input tokens
Less expensive output tokens
OpenAI
Higher GPQA score (83.3% vs 46.9%)
Higher MMMU score (82.9% vs 61.7%)
AmazonNova Pro
OpenAIo3
Compare in Playground

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Nova Pro and o3 side-by-side, then vote on the output you prefer.

Nova Pro
✓ Preferred
o3
Open in Playground
AI Model Comparison Table
Feature
Amazon
Nova Pro
OpenAI
o3

FAQ

Common questions about Nova Pro vs o3.

Which is better, Nova Pro or o3?

o3 significantly outperforms across most benchmarks. Nova Pro is made by Amazon and o3 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Nova Pro compare to o3 in benchmarks?

Nova Pro scores ARC-C: 94.8%, GSM8k: 94.8%, DocVQA: 93.5%, IFEval: 92.1%, ChartQA: 89.2%. o3 scores COLLIE: 98.4%, AIME 2024: 91.6%, ARC-AGI: 88.0%, MathVista: 86.8%, AIME 2025: 86.4%.

Is Nova Pro cheaper than o3?

Nova Pro is 2.5x cheaper for input tokens. Nova Pro costs $0.80/M input and $3.20/M output via bedrock. o3 costs $2.00/M input and $8.00/M output via openai.

What are the context window sizes for Nova Pro and o3?

Nova Pro supports 300K tokens and o3 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Nova Pro and o3?

Key differences include context window (300K vs 200K), input pricing ($0.80 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Nova Pro and o3?

Nova Pro is developed by Amazon and o3 is developed by OpenAI.

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