token.app › Compare › GPT-5.6 Luna Pro vs Grok 4.6
GPT-5.6 Luna Pro vs Grok 4.6
GPT-5.6 Luna Pro is 6.7× cheaper per token on a blended 3:1 basis. GPT-5.6 Luna Pro accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5.6 Luna Pro | Grok 4.6 | |
|---|---|---|
| Provider | OpenAI | SpaceXAI |
| Input $/1M | $0.200 | $2.00 |
| Output $/1M | $1.20 | $6.00 |
| Blended $/1M | $0.450 | $3.00 |
| Context window | 1.1M | 500K |
| Max output | 128K | 450K |
| Released | Jul 2026 | Aug 2026 |
| Licence | Proprietary | Proprietary |
Choose GPT-5.6 Luna Pro if…
- Costs less per token — $0.450 vs $3.00 blended
- Larger context window (1.1M)
Choose Grok 4.6 if…
- Newer model (released Aug 2026)
FAQ
Which is better, GPT-5.6 Luna Pro or Grok 4.6?
We do not hold independently-run benchmark scores covering both GPT-5.6 Luna Pro and Grok 4.6, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5.6 Luna Pro cheaper than Grok 4.6?
GPT-5.6 Luna Pro is cheaper: $0.450 versus $3.00 per million tokens blended at 3:1 input:output. Input alone: $0.200 vs $2.00. Output alone: $1.20 vs $6.00.
What context windows do GPT-5.6 Luna Pro and Grok 4.6 have?
GPT-5.6 Luna Pro: 1,050,000 tokens. Grok 4.6: 500,000 tokens.
Who makes GPT-5.6 Luna Pro and Grok 4.6?
GPT-5.6 Luna Pro is made by OpenAI. Grok 4.6 is made by SpaceXAI.
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