Model Comparison

Claude Opus 4.5 vs Nova ProWhich is better in 2026?

Claude Opus 4.5 significantly outperforms across most benchmarks. Nova Pro is 7.1x cheaper per token.

Verdict: Claude Opus 4.5 vs Nova Pro — which is better?

Claude Opus 4.5 (by Anthropic) 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.

Claude Opus 4.5 outperforms in 1 benchmarks (GPQA), while Nova Pro is better at 0 benchmarks. Claude Opus 4.5 significantly outperforms across most benchmarks.

On price, Nova Pro is roughly 7.1x 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 Claude Opus 4.5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Nov 2025

Choose Nova Pro if…

  • cost matters — it's about 7.1x cheaper per token
  • you process long inputs — it offers a 300,000 token context window
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (GPQA), while Nova Pro is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Nova Pro costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 6.3x more expensive than Nova Pro ($0.80/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 7.8x more expensive than Nova Pro ($3.20/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than Nova Pro.*

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

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
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 Claude Opus 4.5's 200,000 tokens. Nova Pro can generate longer responses up to 300,000 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
Amazon
Nova Pro
Input300,000 tokens
Output300,000 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 and Nova Pro support multimodal inputs.

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

Claude Opus 4.5

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.

Claude Opus 4.5

Proprietary

Closed source

Nova Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Nova Pro was released on 2024-11-20.

Claude Opus 4.5 is 12 months newer than Nova Pro.

Claude Opus 4.5

Nov 24, 2025

6 months ago

1.0yr newer
Nova Pro

Nov 20, 2024

1.5 years ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Nova Pro's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without Nova Pro's cutoff date.

Claude Opus 4.5

Mar 2025

Nova Pro

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. Nova Pro is available from Bedrock.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

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

Anthropic
Higher GPQA score (87.0% vs 46.9%)
Amazon
Larger context window (300,000 tokens)
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Amazon
Nova Pro

FAQ

Common questions about Claude Opus 4.5 vs Nova Pro.

Which is better, Claude Opus 4.5 or Nova Pro?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic 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 Claude Opus 4.5 compare to Nova Pro in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. Nova Pro scores ARC-C: 94.8%, GSM8k: 94.8%, DocVQA: 93.5%, IFEval: 92.1%, ChartQA: 89.2%.

Is Claude Opus 4.5 cheaper than Nova Pro?

Nova Pro is 6.3x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. Nova Pro costs $0.80/M input and $3.20/M output via bedrock.

What are the context window sizes for Claude Opus 4.5 and Nova Pro?

Claude Opus 4.5 supports 200K 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 Claude Opus 4.5 and Nova Pro?

Key differences include context window (200K vs 300K), input pricing ($5.00 vs $0.80/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Nova Pro?

Claude Opus 4.5 is developed by Anthropic and Nova Pro is developed by Amazon.

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