Model Comparison

Granite 3.3 8B Base vs Kimi K2 BaseWhich is better in 2026?

Kimi K2 Base significantly outperforms across most benchmarks.

Verdict: Granite 3.3 8B Base vs Kimi K2 Base — which is better?

Granite 3.3 8B Base (by IBM) and Kimi K2 Base (by Moonshot AI) 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.

Granite 3.3 8B Base outperforms in 0 benchmarks, while Kimi K2 Base is better at 3 benchmarks (GSM8k, MMLU, TriviaQA). Kimi K2 Base significantly outperforms across most benchmarks.

Choose Granite 3.3 8B Base if…

  • you are already invested in the IBM ecosystem

Choose Kimi K2 Base if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped Jul 2025

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Granite 3.3 8B Base outperforms in 0 benchmarks, while Kimi K2 Base is better at 3 benchmarks (GSM8k, MMLU, TriviaQA).

Kimi K2 Base significantly outperforms across most benchmarks.

Tue Jul 28 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

991.8B diff

Kimi K2 Base has 991.8B more parameters than Granite 3.3 8B Base, making it 12139.9% larger.

IBM
Granite 3.3 8B Base
8.2Bparameters
Moonshot AI
Kimi K2 Base
1.0Tparameters
8.2B
Granite 3.3 8B Base
1000.0B
Kimi K2 Base

Input Capabilities

Supported data types and modalities

Granite 3.3 8B Base supports multimodal inputs, whereas Kimi K2 Base does not.

Granite 3.3 8B Base can handle both text and other forms of data like images, making it suitable for multimodal applications.

Granite 3.3 8B Base

Text
Images
Audio
Video

Kimi K2 Base

Text
Images
Audio
Video

License

Usage and distribution terms

Granite 3.3 8B Base is licensed under Apache 2.0, while Kimi K2 Base uses MIT.

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

Granite 3.3 8B Base

Apache 2.0

Open weights

Kimi K2 Base

MIT

Open weights

Release Timeline

When each model was launched

Granite 3.3 8B Base was released on 2025-04-16, while Kimi K2 Base was released on 2025-07-11.

Kimi K2 Base is 3 months newer than Granite 3.3 8B Base.

Granite 3.3 8B Base

Apr 16, 2025

1.3 years ago

Kimi K2 Base

Jul 11, 2025

1.0 years ago

2mo newer

Knowledge Cutoff

When training data ends

Granite 3.3 8B Base has a documented knowledge cutoff of 2024-04-01, while Kimi K2 Base's cutoff date is not specified.

We can confirm Granite 3.3 8B Base's training data extends to 2024-04-01, but cannot make a direct comparison without Kimi K2 Base's cutoff date.

Granite 3.3 8B Base

Apr 2024

Kimi K2 Base

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

IBM
Supports multimodal inputs
Moonshot AI
Higher GSM8k score (92.1% vs 59.0%)
Higher MMLU score (87.8% vs 63.9%)
Higher TriviaQA score (85.1% vs 78.2%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Granite 3.3 8B Base and Kimi K2 Base side-by-side, then vote on the output you prefer.

Granite 3.3 8B Base
✓ Preferred
Kimi K2 Base
Open in Playground
AI Model Comparison Table
Feature
IBM
Granite 3.3 8B Base
Moonshot AI
Kimi K2 Base

FAQ

Common questions about Granite 3.3 8B Base vs Kimi K2 Base.

Which is better, Granite 3.3 8B Base or Kimi K2 Base?

Kimi K2 Base significantly outperforms across most benchmarks. Granite 3.3 8B Base is made by IBM and Kimi K2 Base is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Granite 3.3 8B Base compare to Kimi K2 Base in benchmarks?

Granite 3.3 8B Base scores HumanEval: 89.7%, AttaQ: 88.5%, HumanEval+: 86.1%, AIME 2024: 81.2%, HellaSwag: 80.1%. Kimi K2 Base scores C-Eval: 92.5%, GSM8k: 92.1%, MMLU-redux-2.0: 90.2%, MMLU: 87.8%, TriviaQA: 85.1%.

What are the main differences between Granite 3.3 8B Base and Kimi K2 Base?

Key differences include multimodal support (yes vs no), licensing (Apache 2.0 vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Granite 3.3 8B Base and Kimi K2 Base?

Granite 3.3 8B Base is developed by IBM and Kimi K2 Base is developed by Moonshot AI.

Related comparisons