DeepSeek
DeepSeek V4.1 Flash pricing and benchmarks
DeepSeek’s low-cost model with thinking and non-thinking modes, tool calls and vision input.
Input
$0.30
per 1M tokens
Cached input
$0.006
per 1M tokens
Output
$1.20
per 1M tokens
Capability index
155.6
#17 of 25 tracked
How capable is DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash scores 155.6 on the Epoch Capabilities Index (confidence interval 153.5–157.6), ranking #17 of the 25 rated models we track.
| Benchmark | Tests | Score |
|---|---|---|
| GPQA Diamond | Science reasoning | 89.8% |
| FrontierMath (Tiers 1–3) | Advanced math | 67.4% |
| SimpleQA Verified | Factual accuracy | 42.9% |
| ARC-AGI-2 | Abstract reasoning | 72.9% |
| DeepSWE | Coding | — |
| APEX-Agents | Agentic work | 39.5% |
Source: Epoch AI (as “DeepSeek V4.1 Flash”), best recorded result, CC BY 4.0. A dash means no published score. Compare all models
What DeepSeek V4.1 Flash costs in practice
| Workload | Monthly cost |
|---|---|
Support chatbot 100,000 replies a month, ~1,500 input tokens (system prompt + history) and ~400 output tokens each. | $93.00 |
Document Q&A (RAG) 50,000 questions a month with ~8,000 tokens of retrieved context and ~600 output tokens each. | $156.00 |
Coding agent 10,000 agent steps a month, ~40,000 input tokens each (70% read from the prompt cache) and ~2,000 output tokens. | $61.68 |
Pricing details
- Prices shown are peak rates. Off-peak rates are half: peak hours are 01:00–04:00 and 06:00–10:00 UTC, Monday to Friday.
- Compatible with both OpenAI-format and Anthropic-format APIs.
- Served by model version DeepSeek-V4.1-Flash-1017; the legacy names deepseek-v4-flash and deepseek-v4-flash-vision-exp route to it at the same price.
- Web Search and Fetch cost $0.75 per 1,000 successful requests each; calls made through Claude Code, Codex or DeepSeek Harness are free until November 1, 2026.
Estimate your DeepSeek V4.1 Flash bill
- DeepSeek V4.1 FlashDeepSeek$156.00/mo$0.0031 / request
Standard-tier list prices. Long-context rates apply automatically where the provider publishes a threshold. Excludes cache-write surcharges, taxes, batch and volume discounts.