Model Comparison

Gemma 2 27B vs o1

o1 significantly outperforms across most benchmarks.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemma 2 27B outperforms in 0 benchmarks, while o1 is better at 4 benchmarks (GSM8k, HumanEval, MATH, MMLU).

o1 significantly outperforms across most benchmarks.

Fri Jun 05 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only o1 specifies input context (200,000 tokens). Only o1 specifies output context (100,000 tokens).

Google
Gemma 2 27B
Input- tokens
Output- tokens
OpenAI
o1
Input200,000 tokens
Output100,000 tokens
Fri Jun 05 2026 • llm-stats.com

License

Usage and distribution terms

Gemma 2 27B is licensed under Gemma, while o1 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

o1

Proprietary

Closed source

Release Timeline

When each model was launched

Gemma 2 27B was released on 2024-06-27, while o1 was released on 2024-12-17.

o1 is 6 months newer than Gemma 2 27B.

Gemma 2 27B

Jun 27, 2024

1.9 years ago

o1

Dec 17, 2024

1.5 years ago

5mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Has open weights
OpenAI
Larger context window (200,000 tokens)
Higher GSM8k score (97.1% vs 74.0%)
Higher HumanEval score (88.1% vs 51.8%)
Higher MATH score (96.4% vs 42.3%)
Higher MMLU score (91.8% vs 75.2%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemma 2 27B
OpenAI
o1

FAQ

Common questions about Gemma 2 27B vs o1.

Which is better, Gemma 2 27B or o1?

o1 significantly outperforms across most benchmarks. Gemma 2 27B is made by Google and o1 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 o1 in benchmarks?

Gemma 2 27B scores ARC-E: 88.6%, HellaSwag: 86.4%, BoolQ: 84.8%, TriviaQA: 83.7%, Winogrande: 83.7%. o1 scores GSM8k: 97.1%, MATH: 96.4%, GPQA Physics: 92.8%, MMLU: 91.8%, MGSM: 89.3%.

What are the context window sizes for Gemma 2 27B and o1?

Gemma 2 27B supports an unknown number of tokens and o1 supports 200K 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 o1?

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

Who makes Gemma 2 27B and o1?

Gemma 2 27B is developed by Google and o1 is developed by OpenAI.