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
$0.19 /1M
Output
$0.38 /1M
Cached input
$0.02 /1M90% off
Context
1M
Speed
medium
Performance
Live production data from real requests on Kyma — not synthetic benchmarks.
Rank
#3
of 64 active models
Tokens served
342.6M
all-time
Success rate
99.9%
last 7 days
Top apps using this model
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.
+ Estimate your workload− Estimate your workload
Estimated monthly cost
$13.97
$0.4656 / day on DeepSeek V4 Flash
Same workload on:
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
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.
| Spec | DeepSeek V4 Flash | DeepSeek V4 Pro | DeepSeek V3 |
|---|---|---|---|
| Input /1M | $0.19 | $2.35 | $0.81 |
| Output /1M | $0.38 | $4.70 | $2.29 |
| Context | 1M | 1M | 160K |
| Tools | Yes | Yes | Yes |
| Reasoning | Yes | Yes | Yes |
| Speed | medium | medium | medium |
Quick start
Up and running in under two minutes.
- 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
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
Stream responses
Add
"stream": trueto 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.