token.app › Compare › GPT Luna Latest vs Mercury 3
GPT Luna Latest vs Mercury 3
Mercury 3 is 1.2× cheaper per token on a blended 3:1 basis. GPT Luna Latest accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT Luna Latest | Mercury 3 | |
|---|---|---|
| Provider | OpenAI | Inception |
| Input $/1M | $0.100 | $0.100 |
| Output $/1M | $0.500 | $0.350 |
| Blended $/1M | $0.200 | $0.163 |
| Context window | 1.1M | 1M |
| Max output | 128K | 131K |
| Released | Sep 2026 | Oct 2026 |
| Licence | Proprietary | Proprietary |
Choose GPT Luna Latest if…
- Larger context window (1.1M)
Choose Mercury 3 if…
- Costs less per token — $0.163 vs $0.200 blended
- Newer model (released Oct 2026)
FAQ
Which is better, GPT Luna Latest or Mercury 3?
We do not hold independently-run benchmark scores covering both GPT Luna Latest and Mercury 3, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT Luna Latest cheaper than Mercury 3?
Mercury 3 is cheaper: $0.163 versus $0.200 per million tokens blended at 3:1 input:output. Input alone: $0.100 vs $0.100. Output alone: $0.500 vs $0.350.
What context windows do GPT Luna Latest and Mercury 3 have?
GPT Luna Latest: 1,050,000 tokens. Mercury 3: 1,000,000 tokens.
Who makes GPT Luna Latest and Mercury 3?
GPT Luna Latest is made by OpenAI. Mercury 3 is made by Inception.