GPT-5.6 Luna vs Gemma 4 31B IT
Gemma 4 31B IT is cheaper on output tokens, while GPT-5.6 Luna offers a larger context window. Choose GPT-5.6 Luna or Gemma 4 31B IT based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.6 Luna | Gemma 4 31B IT |
|---|---|---|
| Provider | OpenAI | QVAC |
| Input / 1M tokens | $0.20 | $0.00 |
| Output / 1M tokens | $1.20 | $0.00 |
| Context window | 1.1M | 262K |
| Parameters | — | — |
| Open weights | — | Yes |
| Released | — | Apr 2026 |
| GPQA Diamond score | 91.6 | 75.8 |
| Epoch Capabilities Index score | 156 | 143 |
| LMArena (Chatbot Arena) Elo score | 1431 | — |
| LMArena WebDev Elo score | 1518 | — |
| LMArena Vision Elo score | 1258 | — |
| LiveBench score | — | 62.4 |
FAQ
Is GPT-5.6 Luna or Gemma 4 31B IT cheaper?
Gemma 4 31B IT is cheaper on output tokens ($0.00 vs $1.20 per 1M).
Which has the larger context window, GPT-5.6 Luna or Gemma 4 31B IT?
GPT-5.6 Luna has the larger context window (1.1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.