token.app › Compare › Gemini 4 Argon vs GPT-5.6 Luna
Gemini 4 Argon vs GPT-5.6 Luna
GPT-5.6 Luna is 8.9× 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
| Gemini 4 Argon | GPT-5.6 Luna | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $2.00 | $0.200 |
| Output $/1M | $10.00 | $1.20 |
| Blended $/1M | $4.00 | $0.450 |
| Context window | 1.0M | 1.1M |
| Max output | 944K | 128K |
| Released | Oct 2026 | Jul 2026 |
| Licence | Proprietary | Proprietary |
Choose Gemini 4 Argon if…
- Newer model (released Oct 2026)
Choose GPT-5.6 Luna if…
- Costs less per token — $0.450 vs $4.00 blended
- Larger context window (1.1M)
FAQ
Which is better, Gemini 4 Argon or GPT-5.6 Luna?
We do not hold independently-run benchmark scores covering both Gemini 4 Argon and GPT-5.6 Luna, so we make no quality claim. Their pricing and specifications are compared on this page.
Is Gemini 4 Argon cheaper than GPT-5.6 Luna?
GPT-5.6 Luna is cheaper: $0.450 versus $4.00 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $0.200. Output alone: $10.00 vs $1.20.
What context windows do Gemini 4 Argon and GPT-5.6 Luna have?
Gemini 4 Argon: 1,048,576 tokens. GPT-5.6 Luna: 1,050,000 tokens.
Who makes Gemini 4 Argon and GPT-5.6 Luna?
Gemini 4 Argon is made by Google. GPT-5.6 Luna is made by OpenAI.