token.app › Compare › GPT Audio vs Mercury 3
GPT Audio vs Mercury 3
Mercury 3 is 27× cheaper per token on a blended 3:1 basis. Mercury 3 accepts the larger context window (1M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT Audio | Mercury 3 | |
|---|---|---|
| Provider | OpenAI | Inception |
| Input $/1M | $2.50 | $0.100 |
| Output $/1M | $10.00 | $0.350 |
| Blended $/1M | $4.38 | $0.163 |
| Context window | 128K | 1M |
| Max output | 16K | 131K |
| Released | Jan 2026 | Oct 2026 |
| Licence | Proprietary | Proprietary |
Choose GPT Audio if…
- No clear advantage on the data we hold.
Choose Mercury 3 if…
- Costs less per token — $0.163 vs $4.38 blended
- Larger context window (1M)
- Newer model (released Oct 2026)
FAQ
Which is better, GPT Audio or Mercury 3?
We do not hold independently-run benchmark scores covering both GPT Audio and Mercury 3, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT Audio cheaper than Mercury 3?
Mercury 3 is cheaper: $0.163 versus $4.38 per million tokens blended at 3:1 input:output. Input alone: $2.50 vs $0.100. Output alone: $10.00 vs $0.350.
What context windows do GPT Audio and Mercury 3 have?
GPT Audio: 128,000 tokens. Mercury 3: 1,000,000 tokens.
Who makes GPT Audio and Mercury 3?
GPT Audio is made by OpenAI. Mercury 3 is made by Inception.