DeepSeek V4.1 Flash vs GPT 5.4 Nano
deepseek/deepseek-v4.1-flash · openai/gpt-5.4-nano
As of November 1, 2026, DeepSeek V4.1 Flash is the cheaper API on UberLLM: $0.0002 per million input tokens and $0.0014 per million output, versus $0.0390 / $0.2437 for GPT 5.4 Nano, about 99% 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 DeepSeek V4.1 Flash to cut cost; choose GPT 5.4 Nano when its capabilities fit your task better.
DeepSeek V4.1 Flash vs GPT 5.4 Nano, side by side
| Spec | DeepSeek V4.1 Flash | GPT 5.4 Nano |
|---|---|---|
| Price · input / 1M | $0.0002 | $0.0390 |
| Price · output / 1M | $0.0014 | $0.2437 |
| Context length | 1,048,576 | 400,000 |
| Max output tokens | 384,000 | 128,000 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 99.7% off | 80.5% off |
| First token, median (7 days) | 4.9 s (3,223 requests) | — |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 1, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
DeepSeek V4.1 Flash vs GPT 5.4 Nano — FAQ
Is DeepSeek V4.1 Flash or GPT 5.4 Nano cheaper?
DeepSeek V4.1 Flash is cheaper on a blended token mix, by about 99%. 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 DeepSeek V4.1 Flash and GPT 5.4 Nano?
DeepSeek V4.1 Flash: $0.0002 in / $0.0014 out per 1M tokens. GPT 5.4 Nano: $0.0390 in / $0.2437 out per 1M tokens. That's roughly a 99% blended difference. Prices are live; UberLLM adds no fee.
Can I use both DeepSeek V4.1 Flash and GPT 5.4 Nano 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.