KymaKyma
DeepSeek

DeepSeek

DeepSeek V4 Flash

#3 on KymaBest value

DeepSeek's fast-and-cheap V4-tier model with a 1M-token context window — currently the fourth most-used model on Kyma. Reach for it when you want strong quality at value pricing for coding, general tasks, and long-context work.

Modalities

Text → Text

Input

$0.187 /1M

Output

$0.3741 /1M

Cached input

$0.0187 /1M90% off

Context

1M

Speed

fast

Performance

Live production data from real requests on Kyma — not synthetic benchmarks.

Rank

#3

of 87 active models

Tokens served

348.5M

all-time

Success rate

99.6%

last 7 days

Median throughput37 tok/s
Total requests20,544
Platform share14.6%
Tokens · last 15 daysJul 19 → Aug 2

Top apps using this model

1OpenAI Python84.5M tok
2Python App8.6M tok
3Node.js App4.9M tok
4OpenClaw4.6M tok
5Claude Code3.2M tok

Public apps sending the most traffic to this model — a signal of what real workloads it fits.

Pricing

Pay per token. Cached input is billed at 10% of the input rate.

$0.187 /1M input$0.3741 /1M output
Hobby10 req/day · 2K in / 500 out
~$0.17/mo
Production1,000 req/day · 2K in / 500 out
~$16.83/mo
Scale20,000 req/day · 2K in / 500 out
~$337/mo
+ Estimate your workload
1,000
2,000
500
30%

Estimated monthly cost

$13.80

$0.4601 / day on DeepSeek V4 Flash

Same workload on:

DeepSeek V4 Pro$62.11+350%
DeepSeek V3$28.75+108%

Estimates use list pricing with cached input billed at the 90%-discount rate. Actual bills depend on real token counts — every response includes its exact cost.

When to use DeepSeek V4 Flash

Updated 2026-06-10

Where this model earns its cost — and where it doesn't.

DeepSeek V4 Flash is the fast, cheap entry in DeepSeek's V4 tier — a 284B mixture-of-experts model that sits in Kyma's strong quality tier. It's built as a value workhorse: general tasks, coding, and long-context jobs where you want most of the quality at a fraction of the cost.

In production on Kyma it ranks #4 of 62 models by tokens served, carrying 7.7% of platform traffic with a 100% success rate across recent requests. OpenClaw is its single biggest app — roughly half of all its tokens — with Roo Code and Cline also in its top five. Every call gets Kyma's automatic failover, and prompt caching is fully supported, so repeated prompt prefixes bill at 10% of the input rate.

Capability-wise it checks every box for agent work: a 1M-token context window, up to 65K tokens of output per request, function calling, structured outputs, and extended reasoning. Input and output are text-only.

Coding

A core recommended use, and where its production traffic goes — OpenClaw, Roo Code, and Cline are among its top apps on Kyma, with OpenClaw alone at roughly half its tokens.

Long-context analysis

The 1M-token window takes entire codebases, document collections, or long agent transcripts in one request.

High-volume pipelines

Cheap-tier pricing makes it a sensible default for background jobs, batch processing, and anything that runs thousands of times a day.

Structured agent backbones

Function calling plus structured outputs keep multi-step agents and extraction pipelines on schema.

Reasoning on a budget

Extended reasoning support handles planning and analysis steps without paying flagship rates.

Not ideal for: Image inputs — it's text-only, so anything that needs to look at screenshots or photos should go to a vision model instead.

How it compares

Against the peers people actually weigh it against.

SpecDeepSeek V4 FlashDeepSeek V4 ProDeepSeek V3
Input /1M$0.187$0.6901$0.351
Output /1M$0.3741$1.38$0.513
Context1M1M160K
ToolsYesYesYes
ReasoningYesYesYes
Speedfastmediummedium

Quick start

Up and running in under two minutes.

  1. 1

    Create an API key

    Sign up and grab a key from the dashboard — $0.50 free credit, no card required.

    Get API key →
  2. 2

    Make your first request

    Drop in your key and send a chat completion — fully OpenAI-compatible.

    curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-flash",
    "messages": [
      {"role": "user", "content": "Explain prompt caching in one paragraph."}
    ]
  }'
  3. 3

    Stream responses

    Add "stream": true to receive tokens as they arrive.

    curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-flash",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

FAQ

Common questions about this model.

What is the context window of DeepSeek V4 Flash?

DeepSeek V4 Flash has a 1M-token context window — roughly 1471 pages of text in a single request.

How much does the DeepSeek V4 Flash API cost?

$0.187 per 1M input tokens and $0.3741 per 1M output tokens, with cached input at $0.0187/1M — a 90% discount on repeated prompt prefixes. No subscription; you pay only for what you use.

Does DeepSeek V4 Flash support function calling?

Yes — DeepSeek V4 Flash supports tool/function calling and structured outputs (JSON mode), so it works with agent frameworks out of the box.

How do I use DeepSeek V4 Flash?

Kyma is OpenAI-compatible: point your SDK's base URL at https://kymaapi.com/v1, use your Kyma API key, and set the model to deepseek-v4-flash. Signing up is free and includes $0.50 of credit — no card required.

Is DeepSeek V4 Flash good for coding agents?

Yes — coding is one of its recommended uses, and Kyma's production data backs it up: OpenClaw, Roo Code, and Cline are among its top apps by tokens. Function calling, structured outputs, and the 1M-token context let an agent hold a large codebase in view while making tool calls reliably.

When should I pick V4 Flash over a flagship-tier model?

When volume or context size matters more than squeezing out the last bit of quality. It sits in the strong quality tier at cheap-tier pricing, so it's the better trade for high-frequency agent loops, batch jobs, and long-context work. If a task is a one-shot where peak output quality is everything, a flagship-tier model is worth the premium.

Why use DeepSeek V4 Flash through Kyma?

One API key and one OpenAI-compatible endpoint cover this and every other model on the platform. You get automatic failover when a serving path degrades, prompt caching at a 90% discount on repeated prefixes, the exact cost of every request in usage.cost, and $0.50 of free credit to start — no card required.

Start with $0.50 free credit — no card required.Create account →

More models by DeepSeek

ModelContextInputOutput
DeepSeekDeepSeek V4 Pro1M$0.6901$1.38
DeepSeekDeepSeek V3160K$0.351$0.513
DeepSeekDeepSeek R164K$0.7309$2.957