token.app › Compare › Gemma 2 27B vs GPT-5.6 Luna
Gemma 2 27B vs GPT-5.6 Luna
GPT-5.6 Luna leads on 2 of 2 shared benchmarks. GPT-5.6 Luna is 2.9× cheaper per token on a blended 3:1 basis. GPT-5.6 Luna accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| Gemma 2 27B | GPT-5.6 Luna | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $0.650 | $0.100 |
| Output $/1M | $0.650 | $0.600 |
| Blended $/1M | $0.650 | $0.225 |
| Context window | 8K | 1.1M |
| Max output | 2K | 128K |
| Released | Jul 2024 | Jul 2026 |
| Licence | Open weights | Proprietary |
| GPQA Diamond | 36.5% | 91.6% |
| OTIS Mock AIME | 1.4% | 98.3% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose Gemma 2 27B if…
- Open weights — self-hostable
Choose GPT-5.6 Luna if…
- Costs less per token — $0.225 vs $0.650 blended
- Higher GPQA Diamond (91.6% vs 36.5%)
- Higher OTIS Mock AIME (98.3% vs 1.4%)
- Larger context window (1.1M)
- Newer model (released Jul 2026)
FAQ
Which is better, Gemma 2 27B or GPT-5.6 Luna?
Across the 2 benchmarks both models have independently-run scores for, Gemma 2 27B leads on 0 and GPT-5.6 Luna leads on 2. Benchmarks are one input — price and context window are on this page too.
Is Gemma 2 27B cheaper than GPT-5.6 Luna?
GPT-5.6 Luna is cheaper: $0.225 versus $0.650 per million tokens blended at 3:1 input:output. Input alone: $0.650 vs $0.100. Output alone: $0.650 vs $0.600.
What context windows do Gemma 2 27B and GPT-5.6 Luna have?
Gemma 2 27B: 8,192 tokens. GPT-5.6 Luna: 1,050,000 tokens.
Who makes Gemma 2 27B and GPT-5.6 Luna?
Gemma 2 27B is made by Google. GPT-5.6 Luna is made by OpenAI.