token.app › Compare › GPT Audio Mini vs Grok 4.5
GPT Audio Mini vs Grok 4.5
GPT Audio Mini is 2.9× cheaper per token on a blended 3:1 basis. Grok 4.5 accepts the larger context window (500K).
Head to head
Blended price uses a 3:1 input:output mix
| GPT Audio Mini | Grok 4.5 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Input $/1M | $0.600 | $2.00 |
| Output $/1M | $2.40 | $6.00 |
| Blended $/1M | $1.05 | $3.00 |
| Context window | 128K | 500K |
| Max output | 16K | — |
| Released | Jan 2026 | Jul 2026 |
| Licence | Proprietary | Proprietary |
Choose GPT Audio Mini if…
- Costs less per token — $1.05 vs $3.00 blended
Choose Grok 4.5 if…
- Larger context window (500K)
- Newer model (released Jul 2026)
FAQ
Which is better, GPT Audio Mini or Grok 4.5?
We do not hold independently-run benchmark scores covering both GPT Audio Mini and Grok 4.5, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT Audio Mini cheaper than Grok 4.5?
GPT Audio Mini is cheaper: $1.05 versus $3.00 per million tokens blended at 3:1 input:output. Input alone: $0.600 vs $2.00. Output alone: $2.40 vs $6.00.
What context windows do GPT Audio Mini and Grok 4.5 have?
GPT Audio Mini: 128,000 tokens. Grok 4.5: 500,000 tokens.
Who makes GPT Audio Mini and Grok 4.5?
GPT Audio Mini is made by OpenAI. Grok 4.5 is made by xAI.