Claude Sonnet 5 vs DeepSeek V4.1 Flash 1017
anthropic/claude-sonnet-5 · deepseek/deepseek-v4.1-flash-1017
As of October 25, 2026, DeepSeek V4.1 Flash 1017 is the cheaper API on UberLLM: $0.0255 per million input tokens and $0.1020 per million output, versus $0.1600 / $0.8000 for Claude Sonnet 5 — about 87% less on a blended 3:1 token mix. Both are reached through one OpenAI-compatible key and routed to the cheapest healthy seller, with no UberLLM fee added, so the price you see is the price you pay. Choose DeepSeek V4.1 Flash 1017 to cut cost; choose Claude Sonnet 5 when its capabilities fit your task better.
Claude Sonnet 5 vs DeepSeek V4.1 Flash 1017, side by side
| Spec | Claude Sonnet 5 | DeepSeek V4.1 Flash 1017 |
|---|---|---|
| Price · input / 1M | $0.1600 | $0.0255 |
| Price · output / 1M | $0.8000 | $0.1020 |
| Context length | 1,000,000 | 1,048,576 |
| Max output tokens | 64,000 | 393,216 |
| Input modalities | text | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | — | Yes |
| Reasoning | Yes | Yes |
| Cheapest seller | UberLLM | UberLLM |
| % off list | 92% off | 83% off |
Live prices via UberLLM, routed to the cheapest healthy seller. The price shown has no UberLLM fee added. Updated October 25, 2026.
Claude Sonnet 5 vs DeepSeek V4.1 Flash 1017 — FAQ
Is Claude Sonnet 5 or DeepSeek V4.1 Flash 1017 cheaper?
DeepSeek V4.1 Flash 1017 is cheaper on a blended token mix, by about 87%. UberLLM routes every request to the cheapest healthy seller and bills the price shown, with no fee added.
What's the price difference between Claude Sonnet 5 and DeepSeek V4.1 Flash 1017?
Claude Sonnet 5: $0.1600 in / $0.8000 out per 1M tokens. DeepSeek V4.1 Flash 1017: $0.0255 in / $0.1020 out per 1M tokens. That's roughly a 87% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Sonnet 5 and DeepSeek V4.1 Flash 1017 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.