Gemma 3 4B vs GPT-6 Luna
Price, context window & benchmark comparison
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Compare different models
Verdict: Gemma 3 4B is 3.2× cheaper than GPT-6 Luna on a typical 3:1 input/output mix. GPT-6 Luna has the larger context window (1.1M vs 131K).
| Gemma 3 4B | GPT-6 Luna | |
|---|---|---|
| Input price / 1M | $0.05 | $0.10 |
| Output price / 1M | $0.10 | $0.50 |
| Blended price (3:1) | $0.0625 | $0.20 |
| Cached input / 1M | — | $0.01 |
| Context window | 131K | 1.1M |
| Max output | 16K | 128K |
| Intelligence index | — | 37.3 |
| Coding index | 2.7 | — |
| Providers | — | 7 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | No | Yes |
| Tool calling | No | Yes |
| Released | 2025-03-13 | 2026-09-22 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, Gemma 3 4B or GPT-6 Luna?
Gemma 3 4B is 3.2× cheaper than GPT-6 Luna on a typical 3:1 input/output mix.
Gemma 3 4B vs GPT-6 Luna: which has a bigger context window?
Gemma 3 4B: 131,072 tokens. GPT-6 Luna: 1,050,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Gemma 3 4B ≈ $150.00, GPT-6 Luna ≈ $450.00.
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