DeepSeek V4.1 Flash 1017 vs GPT-5.5 Pro
deepseek/deepseek-v4.1-flash-1017 · openai/gpt-5.5-pro
As of October 31, 2026, DeepSeek V4.1 Flash 1017 is the cheaper API on UberLLM: $0.0077 per million input tokens and $0.0309 per million output, versus $24.51 / $147.06 for GPT-5.5 Pro, about 100% less when output is 3 tokens for every input token. These are the median prices buyers paid over the last 24 hours. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose DeepSeek V4.1 Flash 1017 to cut cost; choose GPT-5.5 Pro when its capabilities fit your task better.
DeepSeek V4.1 Flash 1017 vs GPT-5.5 Pro, side by side
| Spec | DeepSeek V4.1 Flash 1017 | GPT-5.5 Pro |
|---|---|---|
| Price · input / 1M | $0.0077 | $24.51 |
| Price · output / 1M | $0.0309 | $147.06 |
| Context length | 1,048,576 | 1,000,000 |
| Max output tokens | 393,216 | 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 | 95% off | 18% off |
| First token, median (7 days) | 2.5 s (4,454 requests) | — |
Median prices buyers paid on UberLLM over the last 24 hours. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated October 31, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
DeepSeek V4.1 Flash 1017 vs GPT-5.5 Pro — FAQ
Is DeepSeek V4.1 Flash 1017 or GPT-5.5 Pro cheaper?
DeepSeek V4.1 Flash 1017 is cheaper on a blended token mix, by about 100%. 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 1017 and GPT-5.5 Pro?
DeepSeek V4.1 Flash 1017: $0.0077 in / $0.0309 out per 1M tokens. GPT-5.5 Pro: $24.51 in / $147.06 out per 1M tokens. That's roughly a 100% blended difference. Prices are live; UberLLM adds no fee.
Can I use both DeepSeek V4.1 Flash 1017 and GPT-5.5 Pro 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.