Gemma 3 27B vs GPT-5.6 Terra Pro
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Gemma 3 27B and GPT-5.6 Terra Pro.
Gemma 3 27B
Gemma 3 introduces multimodality, supporting vision-language input and text outputs. It handles context windows up to 128k tokens, understands over 140 languages, and offers improved math, reasoning, and chat capabilities,...
GPT-5.6 Terra Pro
GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
Technical Specifications
| Specification | Gemma 3 27B | GPT-5.6 Terra Pro |
|---|---|---|
| Provider | OpenAI | |
| Context Window | 131,072 tokens | 1,050,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2025-03-12 | 2026-07-09 |
API Pricing Comparison
Input Price per Million Tokens
Gemma 3 27B
$0.08
GPT-5.6 Terra Pro
$2.50
Output Price per Million Tokens
Gemma 3 27B
$0.16
GPT-5.6 Terra Pro
$15.00
Want to test both models live?
Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Gemma 3 27B Quirks & Gotchas
No developer gotchas reported.
GPT-5.6 Terra Pro Quirks & Gotchas
No developer gotchas reported.