What does DeepSeek-V4.1-Flash cost?

DeepSeek-V4.1-Flash is priced at $0.6 output and $0.15 input (USD per 1M tokens) Peak-hour output is $1.2.

How large is the context window of DeepSeek-V4.1-Flash?

DeepSeek-V4.1-Flash has a 1M Tokens context window with up to 384K Tokens output.

Where can I access DeepSeek-V4.1-Flash?

Official channels: Website and API platform.

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DeepSeek

DeepSeek-V4.1-Flash

SOpen

Current serving checkpoint of DeepSeek's fast model (DeepSeek-V4.1-Flash-1017, released 2026-10-17), which the deepseek-flash API alias now points to. All 11 vendor benchmarks improved over the 0924 build, including DeepSWE v1.1 (74.2→77.0), Terminal-Bench 4.0 (31.2→42.3), HLE (39.2→42.6) and Apex Bench v1.1 (64.6→72.1); outputs are shorter and tasks finish faster, cutting per-task cost by ~60%. Native visual input, 1M context, compressed KV cache, MIT-licensed open weights, and the top open-weight spot on Arena Code Arena WebDev (1670).

API Pricing

Input

$0.15

Output

$0.6

Cached input

$0.003

Peak hours

$1.2

USD / 1M tokens

※ This model bills by peak/off-peak: the input and output rates above are off-peak, and the peak rates are shown in the Peak hours tile.

※ Overseas pricing (DeepSeek official international pricing page https://api-docs.deepseek.com/quick_start/pricing/ , re-verified 2026-11-02): off-peak $0.15 input (cache hit $0.003) / $0.6 output per million tokens, half of the standard peak price ($0.3/$1.2). Peak hours are UTC Monday to Friday 01:00–04:00 and 06:00–10:00 (excluding Chinese statutory holidays); all other periods, including weekends and holidays, are off-peak. Search / Fetch APIs are billed at $0.75 per 1,000 successful requests each; server-side tool calls through DeepSeek Harness / Claude Code / Codex became billable per request from 2026-11-01 00:00 Beijing time

Price sourceapi-docs.deepseek.com ↗cloud.tencent.com ↗· verified 2026-11-02

Latest change：Up 125% vs previous（$0.882 → $1.985 / 1M）

Price history

12 snapshots · 2026-04-28 → 2026-08-17

Current: $1.985Period low: $0.882 (2026-05-20)Period high: $3.529 (2026-04-28)First tracked: $3.529 (2026-04-28)

Specifications

Context window: 1M Tokens
Max output: 384K Tokens
Total parameters: 763B
Architecture: MoE
Input modalities: Text · Image
License: MIT

Overall score

Total

71.6

Rank

Tier

Data confidence

94%

Capability58

Scale74

Value82

Context76.9

Ecosystem85

Freshness82.8

Capabilities & use cases

DeepSWE_v1.1 77.0HLE 42.6

Key capabilities

Thinking mode (enabled by default)
Vision input
Tool calling
Web search (Search API)

Best for

High-concurrency batch processing
Lightweight agents

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Same vendor

DeepSeek-V4-Pro

FAQ

What does DeepSeek-V4.1-Flash cost?: DeepSeek-V4.1-Flash is priced at $0.6 output and $0.15 input (USD per 1M tokens) Peak-hour output is $1.2.
How large is the context window of DeepSeek-V4.1-Flash?: DeepSeek-V4.1-Flash has a 1M Tokens context window with up to 384K Tokens output.
Where can I access DeepSeek-V4.1-Flash?: Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.