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Gemma 2 27B vs GPT-3.5 Turbo

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

Google · OpenAI · Updated for 2026

Which is better?

Gemma 2 27B outperforms in 1 benchmarks (MMLU), while GPT-3.5 Turbo is better at 2 benchmarks (HumanEval, MATH). GPT-3.5 Turbo shows notably better performance in the majority of benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Gemma 2 27B

  • you want the most recent training data — it shipped Jun 2024
  • you need open weights you can self-host or fine-tune

Choose GPT-3.5 Turbo

  • you want the strongest raw capability — it leads on 2 of 3 shared benchmarks

At a glance

The differences that matter most.

Gemma 2 27B
Google
GPT-3.5 Turbo
OpenAI
Benchmark wins
1 of 3
2 of 3
Input price
— / M
$0.50 / M
Output price
— / M
$1.50 / M
Context window
—
16,385
Released
Jun 2024
Mar 2023
License
Gemma
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

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

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

Wed Aug 26 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

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).

Google
Gemma 2 27B
Input- tokens
Output- tokens
OpenAI
GPT-3.5 Turbo
Input16,385 tokens
Output4,096 tokens
Wed Aug 26 2026 • llm-stats.com

License

Usage and distribution terms

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

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

Gemma 2 27B

Gemma

Open weights

GPT-3.5 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

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

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

Gemma 2 27B

Jun 27, 2024

2.2 years ago

1.3yr newer
GPT-3.5 Turbo

Mar 21, 2023

3.4 years ago

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.

Gemma 2 27B

—

GPT-3.5 Turbo

Sep 2021

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemma 2 27B and GPT-3.5 Turbo side-by-side, then vote on the output you prefer.

Gemma 2 27B
✓ Preferred
GPT-3.5 Turbo
Open in Playground

FAQ

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

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

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

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

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

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

Gemma 2 27B supports an unknown number of tokens and GPT-3.5 Turbo supports 16K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemma 2 27B and GPT-3.5 Turbo?

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

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

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

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