Model Comparison

Claude Opus 4.5 vs Granite 3.3 8B BaseWhich is better in 2026?

Comparing Claude Opus 4.5 and Granite 3.3 8B Base across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 4.5 vs Granite 3.3 8B Base — which is better?

Claude Opus 4.5 (by Anthropic) and Granite 3.3 8B Base (by IBM) 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.

Choose Claude Opus 4.5 if…

  • you want the most recent training data — it shipped Nov 2025

Choose Granite 3.3 8B Base if…

  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 4.5 and Granite 3.3 8B Base don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude Opus 4.5 specifies input context (200,000 tokens). Only Claude Opus 4.5 specifies output context (64,000 tokens).

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
IBM
Granite 3.3 8B Base
Input- tokens
Output- tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 and Granite 3.3 8B Base 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

Granite 3.3 8B Base

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while Granite 3.3 8B Base uses Apache 2.0.

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

Claude Opus 4.5

Proprietary

Closed source

Granite 3.3 8B Base

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Granite 3.3 8B Base was released on 2025-04-16.

Claude Opus 4.5 is 7 months newer than Granite 3.3 8B Base.

Claude Opus 4.5

Nov 24, 2025

6 months ago

7mo newer
Granite 3.3 8B Base

Apr 16, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a knowledge cutoff of 2025-03-31, while Granite 3.3 8B Base has a cutoff of 2024-04-01.

Claude Opus 4.5 has more recent training data (up to 2025-03-31), making it potentially better informed about events through that date compared to Granite 3.3 8B Base (2024-04-01).

Claude Opus 4.5

Mar 2025

11 mo newer
Granite 3.3 8B Base

Apr 2024

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
IBM
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
IBM
Granite 3.3 8B Base

FAQ

Common questions about Claude Opus 4.5 vs Granite 3.3 8B Base.

Which is better, Claude Opus 4.5 or Granite 3.3 8B Base?

Claude Opus 4.5 (Anthropic) and Granite 3.3 8B Base (IBM) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Opus 4.5 compare to Granite 3.3 8B Base 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%. Granite 3.3 8B Base scores HumanEval: 89.7%, AttaQ: 88.5%, HumanEval+: 86.1%, AIME 2024: 81.2%, HellaSwag: 80.1%.

What are the context window sizes for Claude Opus 4.5 and Granite 3.3 8B Base?

Claude Opus 4.5 supports 200K tokens and Granite 3.3 8B Base supports an unknown number of 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 Granite 3.3 8B Base?

Key differences include licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Granite 3.3 8B Base?

Claude Opus 4.5 is developed by Anthropic and Granite 3.3 8B Base is developed by IBM.

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