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DeepSeek: DeepSeek V4.1 Flash vs ScaleDown: Summarize

Neither wins outright: DeepSeek: DeepSeek V4.1 Flash is the pick when you need tool / function calling, ScaleDown: Summarize when cost matters at scale.

Key numbers

SpecDeepSeek: DeepSeek V4.1 FlashScaleDown: Summarize
ProviderDeepSeekScaledown
Input price (per 1M tokens)$0.04$0.04
Output price (per 1M tokens)$0.60$0
Blended price (3:1 input/output)$0.18$0.03
Cheaper than … of all models we track71%89%
Context window1.0M tokens (~1,573 pages)1M tokens (~1,500 pages)
Larger context than … of all models81%69%
Max output per response944K tokens (~707,800 words)4K tokens (~3,000 words)
Input typestext, imagetext, image, file
Output typestexttext
Free variantNoNo
Listed since2026-09-102026-10-13

What it costs for real workloads

Monthly cost at list price for five common workloads. Token counts per unit are stated so you can scale them to your own traffic. A workload that does not fit a model's context window is marked rather than priced.

Workload (per month)DeepSeek: DeepSeek V4.1 FlashScaleDown: SummarizeDifference
Customer-support chatbot
50,000 conversations — each a 6-turn conversation (1,500 in / 400 out tokens)
$14.63$3.00ScaleDown: Summarize saves $11.63
RAG search over documents
20,000 questions — each a question answered from ~8 retrieved passages (6,000 in / 500 out tokens)
$10.20$4.80ScaleDown: Summarize saves $5.40
Coding / tool-using agent
2,000 tasks — each a multi-step task with tool calls and file context (60,000 in / 6,000 out tokens)
$11.40$4.80ScaleDown: Summarize saves $6.60
Batch summarisation
10,000 documents — each a 6,000-word report summarised to a page (8,000 in / 600 out tokens)
$6.40$3.20ScaleDown: Summarize saves $3.20
Long-document analysis
500 documents — each a 150-page contract or codebase read in one pass (100,000 in / 2,000 out tokens)
$2.35$2.00ScaleDown: Summarize saves $0.35

Capabilities side by side

CapabilityDeepSeek: DeepSeek V4.1 FlashScaleDown: SummarizeWhat it lets you do
Tool / function calling✓ Yes—call your APIs and run agent loops
Structured output (JSON schema)✓ Yes—return JSON that validates against your schema
Reasoning / thinking mode✓ Yes—spend extra tokens thinking before answering hard problems
Image input✓ Yes✓ Yesread screenshots, charts and scanned pages
Audio input——take speech or audio directly
File / PDF input—✓ Yesaccept documents without your own parsing step
Image output——generate images, not just text
Built-in web search——answer from live web results
Seed (reproducible sampling)✓ Yes—repeat a generation for tests and evals
Log-probabilities✓ Yes—read token confidence for classification and scoring

From each model's published parameters and input/output types. “—” means not advertised, not proven absent.

Price history

DateModelInput / 1MOutput / 1M
2026-10-14DeepSeek: DeepSeek V4.1 Flash$0.04$0.60
2026-10-06DeepSeek: DeepSeek V4.1 Flash$0.30$1.20
2026-10-04DeepSeek: DeepSeek V4.1 Flash$0.0030$2.40
2026-10-03DeepSeek: DeepSeek V4.1 Flash$0.30$1.20
2026-10-02DeepSeek: DeepSeek V4.1 Flash$0.02$0.75
2026-10-01DeepSeek: DeepSeek V4.1 Flash$0.02$0.40
2026-09-29DeepSeek: DeepSeek V4.1 Flash$0.30$1.20
2026-09-28DeepSeek: DeepSeek V4.1 Flash$0.03$0.60

Which should you choose?

Choose DeepSeek: DeepSeek V4.1 Flash if…

  • you need tool / function calling — to call your APIs and run agent loops; ScaleDown: Summarize does not advertise it
  • you need structured output (JSON schema) — to return JSON that validates against your schema; ScaleDown: Summarize does not advertise it
  • you need reasoning / thinking mode — to spend extra tokens thinking before answering hard problems; ScaleDown: Summarize does not advertise it
  • you need seed (reproducible sampling) — to repeat a generation for tests and evals; ScaleDown: Summarize does not advertise it
  • you need log-probabilities — to read token confidence for classification and scoring; ScaleDown: Summarize does not advertise it
  • you generate long outputs in one go — up to 944K tokens (about 707,800 words) per response

Choose ScaleDown: Summarize if…

  • cost matters at scale — it is 83% cheaper on a typical 3:1 input/output mix ($3.00 vs $14.63 a month for 50,000 support chats)
  • you need file / PDF input — to accept documents without your own parsing step; DeepSeek: DeepSeek V4.1 Flash does not advertise it

Frequently asked questions

Is DeepSeek: DeepSeek V4.1 Flash better than ScaleDown: Summarize?

Neither wins outright: DeepSeek: DeepSeek V4.1 Flash is the pick when you need tool / function calling, ScaleDown: Summarize when cost matters at scale. In short: DeepSeek: DeepSeek V4.1 Flash when you need tool / function calling, you need structured output (JSON schema), you need reasoning / thinking mode, you need seed (reproducible sampling), you need log-probabilities, you generate long outputs in one go; ScaleDown: Summarize when cost matters at scale, you need file / PDF input.

Which is cheaper, DeepSeek: DeepSeek V4.1 Flash or ScaleDown: Summarize?

ScaleDown: Summarize is cheaper: $0.03 vs $0.18 per 1M tokens at a typical 3:1 input/output mix, 83% less. For 50,000 support conversations a month that is $3.00 against $14.63.

How much do DeepSeek: DeepSeek V4.1 Flash and ScaleDown: Summarize cost per million tokens?

DeepSeek: DeepSeek V4.1 Flash costs $0.04 per 1M input tokens and $0.60 per 1M output tokens; ScaleDown: Summarize costs $0.04 input and $0 output. Output tokens are billed separately, so long answers shift the gap.

Which has the bigger context window, DeepSeek: DeepSeek V4.1 Flash or ScaleDown: Summarize?

DeepSeek: DeepSeek V4.1 Flash: 1.0M tokens, about 1,573 pages, against 1M (about 1,500 pages) for ScaleDown: Summarize.

Do DeepSeek: DeepSeek V4.1 Flash and ScaleDown: Summarize support function calling and JSON output?

Tool calling — DeepSeek: DeepSeek V4.1 Flash: yes, ScaleDown: Summarize: not advertised. JSON-schema structured output — DeepSeek: DeepSeek V4.1 Flash: yes, ScaleDown: Summarize: not advertised.

Can DeepSeek: DeepSeek V4.1 Flash or ScaleDown: Summarize read images?

Yes, both accept image input.

Is DeepSeek: DeepSeek V4.1 Flash or ScaleDown: Summarize free to use?

No free variant is listed for either; both are pay-per-token.

What is the maximum output length of DeepSeek: DeepSeek V4.1 Flash and ScaleDown: Summarize?

DeepSeek: DeepSeek V4.1 Flash can write up to 944K tokens (about 707,800 words) per response; ScaleDown: Summarize up to 4K (about 3,000 words).

When were DeepSeek: DeepSeek V4.1 Flash and ScaleDown: Summarize released?

DeepSeek: DeepSeek V4.1 Flash was listed on 2026-09-10; ScaleDown: Summarize on 2026-10-13.

Has the price of DeepSeek: DeepSeek V4.1 Flash or ScaleDown: Summarize changed?

DeepSeek: DeepSeek V4.1 Flash: input price cut 88% ($0.30 → $0.04/1M), output price cut 50% ($1.20 → $0.60/1M) on 2026-10-14 (17 price changes since 2026-09-11). ScaleDown: Summarize: price unchanged since we started tracking it on 2026-10-14.

About the two models

Compare DeepSeek: DeepSeek V4.1 Flash with other models

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Compare ScaleDown: Summarize with other models

vs AI21: Jamba Large 1.7vs AionLabs: Aion 3.5vs AionLabs: Aion 3.5 Minivs AionLabs: Aion-1.0
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