Model Comparison

GPT-3.5 Turbo vs Gemma 2 27B

GPT-3.5 Turbo shows notably better performance in the majority of benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

GPT-3.5 Turbo outperforms in 2 benchmarks (HumanEval, MATH), while Gemma 2 27B is better at 1 benchmark (MMLU).

GPT-3.5 Turbo shows notably better performance in the majority of benchmarks.

Mon Jun 01 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only GPT-3.5 Turbo specifies input context (16,385 tokens). Only GPT-3.5 Turbo specifies output context (4,096 tokens).

OpenAI
GPT-3.5 Turbo
Input16,385 tokens
Output4,096 tokens
Google
Gemma 2 27B
Input- tokens
Output- tokens
Mon Jun 01 2026 • llm-stats.com

License

Usage and distribution terms

GPT-3.5 Turbo is licensed under a proprietary license, while Gemma 2 27B uses Gemma.

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

GPT-3.5 Turbo

Proprietary

Closed source

Gemma 2 27B

Gemma

Open weights

Release Timeline

When each model was launched

GPT-3.5 Turbo was released on 2023-03-21, while Gemma 2 27B was released on 2024-06-27.

Gemma 2 27B is 15 months newer than GPT-3.5 Turbo.

GPT-3.5 Turbo

Mar 21, 2023

3.2 years ago

Gemma 2 27B

Jun 27, 2024

1.9 years ago

1.3yr newer

Knowledge Cutoff

When training data ends

GPT-3.5 Turbo has a documented knowledge cutoff of 2021-09-30, while Gemma 2 27B's cutoff date is not specified.

We can confirm GPT-3.5 Turbo's training data extends to 2021-09-30, but cannot make a direct comparison without Gemma 2 27B's cutoff date.

GPT-3.5 Turbo

Sep 2021

Gemma 2 27B

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Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (16,385 tokens)
Higher HumanEval score (68.0% vs 51.8%)
Higher MATH score (43.1% vs 42.3%)
Google
Has open weights
Higher MMLU score (75.2% vs 69.8%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-3.5 Turbo
Google
Gemma 2 27B

FAQ

Common questions about GPT-3.5 Turbo vs Gemma 2 27B.

Which is better, GPT-3.5 Turbo or Gemma 2 27B?

GPT-3.5 Turbo shows notably better performance in the majority of benchmarks. GPT-3.5 Turbo is made by OpenAI and Gemma 2 27B is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-3.5 Turbo compare to Gemma 2 27B in benchmarks?

GPT-3.5 Turbo scores DROP: 70.2%, MMLU: 69.8%, HumanEval: 68.0%, MGSM: 56.3%, MATH: 43.1%. Gemma 2 27B scores ARC-E: 88.6%, HellaSwag: 86.4%, BoolQ: 84.8%, TriviaQA: 83.7%, Winogrande: 83.7%.

What are the context window sizes for GPT-3.5 Turbo and Gemma 2 27B?

GPT-3.5 Turbo supports 16K tokens and Gemma 2 27B 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 GPT-3.5 Turbo and Gemma 2 27B?

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

Who makes GPT-3.5 Turbo and Gemma 2 27B?

GPT-3.5 Turbo is developed by OpenAI and Gemma 2 27B is developed by Google.