Model Details
Gemma 3 27B
Quick answer: Gemma 3 27B is Google's March 2025 open-weight multimodal model, scoring 87.8% on HumanEval, 67.5% on MMLU-Pro, 89.0% on MATH, and 26.0% on BigCodeBench. With a 128K context window and Gemma Terms of Use, it is the largest and most capable model in the Gemma 3 family.
At a Glance
Where Gemma 3 27B leads
- 89.0% MATH — strong competition mathematics performance
- 87.8% HumanEval — excellent function-level code completion
- 67.5% MMLU-Pro — competitive academic knowledge at 27B scale
- Multimodal: text and image inputs
- 128K context window
- Open weights available on Hugging Face
Where it lags
- Gemma Terms of Use (not Apache 2.0 or MIT) — some commercial restrictions
- 26.0% BigCodeBench — moderate complex coding
- Text+vision only; no audio
- Superseded by Gemma 4 family for new deployments
Best for: Open-weight multimodal tasks at 27B scale; teams within the Google/TPU ecosystem; high-quality math and code completion tasks.
What Gemma 3 27B Is
Gemma 3 27B is the largest model in Google's Gemma 3 open-model family, released March 12, 2025. It introduces multimodal capability (text + image) to the Gemma 3 line, targeting vision-language tasks at the 27B scale that was previously only available in much larger proprietary models.
The model's 89.0% MATH score is notable — placing it above many models 2-3× its parameter count on competition mathematics. Combined with 87.8% HumanEval, Gemma 3 27B is a strong choice for mathematical reasoning and code completion tasks in the open-weight 27B tier.
Google deploys Gemma 3 models with JAX/TPU training, and the models are optimised for Google's infrastructure. For teams building on GCP or using Google Cloud AI Platform, Gemma 3 27B integrates well into the Google AI ecosystem.
Specifications
| Field | Value |
|---|---|
| Organization | |
| Parameters | 27B (dense) |
| Context window | 128,000 tokens |
| License | Gemma Terms of Use |
| HuggingFace | google/gemma-3-27b-it |
| Release date | March 12, 2025 |
| Knowledge cutoff | September 2024 |
| Modality | Text + Vision (multimodal) |
Pricing
Gemma 3 27B is available as open weights under the Gemma Terms of Use. Available via Google Cloud Vertex AI and third-party providers.
Public Benchmark Scores
| Benchmark | Score | Source | Date |
|---|---|---|---|
| HumanEval | 87.8% | Benchgen evaluation | 2025-07 |
| MMLU-Pro | 67.5% | Benchgen evaluation | 2025-07 |
| MATH | 89.0% | Benchgen evaluation | 2025-07 |
| BigCodeBench | 26.0% | Benchgen evaluation | 2025-07 |
Gemma 3 27B vs Alternatives
| Model | HumanEval | MMLU-Pro | MATH | License |
|---|---|---|---|---|
| Gemma 3 27B | 87.8% | 67.5% | 89.0% | Gemma ToU |
| Gemma 3 12B | 85.4% | 60.6% | — | Gemma ToU |
| Phi-4 | 82.6% | 70.4% | — | Apache 2.0 |
| Llama 4 Maverick | — | 80.5% | — | Llama 4 |
Gemma 3 27B vs Phi-4: higher HumanEval and MATH at 27B vs 14B — Phi-4 has higher MMLU-Pro (70.4% vs 67.5%) at smaller size. Gemma 3 27B is the preferred choice when multimodal capability is needed.
Related Models & Benchmarks
- Compare: Gemma 3 12B · Phi-4 · Llama 3.1 70B Instruct
- Benchmarks: HumanEval · MMLU-Pro · MATH
Frequently Asked Questions
What is Gemma 3 27B?
Gemma 3 27B is Google's March 2025 open-weight multimodal 27B model, scoring 87.8% HumanEval, 67.5% MMLU-Pro, and 89.0% MATH with a 128K context window.Is Gemma 3 27B open source?
The weights are open under the Gemma Terms of Use on Hugging Face. This license permits commercial use with some conditions — review the terms for your specific use case.What is Gemma 3 27B's context window?
Gemma 3 27B supports a 128,000-token context window.Does Gemma 3 27B support images?
Yes. Gemma 3 27B is a multimodal model supporting both text and image inputs.Specs from Google's official Gemma 3 release (March 2025) and Benchgen evaluations. Last updated 2026-07-24.
Benchmark Leaderboards
This model isn’t on any benchmark leaderboard yet.