GPT-4o Mini vs GPT-5.4
openai/gpt-4o-mini · openai/gpt-5.4
As of November 3, 2026, GPT-4o Mini is the cheaper API on UberLLM: $0.0089 per million input tokens and $0.0358 per million output, versus $0.0605 / $0.3632 for GPT-5.4, about 90% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GPT-4o Mini to cut cost; choose GPT-5.4 when context size wins. GPT-5.4 carries the larger context window (1,000,000 vs 128,000 tokens), which can matter for long-document work.
GPT-4o Mini vs GPT-5.4, side by side
| Spec | GPT-4o Mini | GPT-5.4 |
|---|---|---|
| Price · input / 1M | $0.0089 | $0.0605 |
| Price · output / 1M | $0.0358 | $0.3632 |
| Context length | 128,000 | 1,000,000 |
| Max output tokens | 16,384 | 131,072 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | — | Yes |
| % off list | 94% off | 97.6% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 3, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
GPT-4o Mini vs GPT-5.4 — FAQ
Is GPT-4o Mini or GPT-5.4 cheaper?
GPT-4o Mini is cheaper on a blended token mix, by about 90%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between GPT-4o Mini and GPT-5.4?
GPT-4o Mini: $0.0089 in / $0.0358 out per 1M tokens. GPT-5.4: $0.0605 in / $0.3632 out per 1M tokens. That's roughly a 90% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GPT-4o Mini and GPT-5.4 with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.