KeyoAPI
DeepSeek V4 Flash on KeyoAPI — Fast Tier, Price & Free ID
DeepSeek V4 Flash is KeyoAPI’s cost and latency lean twin in the V4 family.
Overview
DeepSeek V4 Flash is KeyoAPI’s cost and latency lean twin in the V4 family. If you are comparing deepseek v4 flash notes across forums, this page translates that model into callable IDs: deepseek-v4-flash for token billing and deepseek-v4-flash-free for permanent $0 fair-use prototyping. Indicative Keyo rates sit near $1.10 per 1M input and $3.30 per 1M output — materially below Pro — which makes Flash the default for chat widgets, classification, light agents, and batch rewrite jobs. Always verify /pricing/deepseek-v4-flash before locking a quote. The free ID is not a disappearing trial; ModelPrice stays $0, with fair-use rate limits on the Keyo Free channel. When your product needs predictable QPS, promote to the paid bare name without changing base URL or auth. SERP honesty: bare deepseek v4 flash queries are hot but dominated by official and community review destinations. Keyo does not invent fake “#1 ranking” claims. We win when a developer already decided on DeepSeek and needs a relay that also hosts Gemini-class, Whisper, and OCR under one balance. For purchase-intent pricing searches, route readers to /deepseek-api-pricing where Flash, Pro, and $0 free rows sit in one comparison table. Shipping patterns that fit Flash: customer-support drafts, SEO content assist, embedding-adjacent summarization, and CI that hits free IDs on every PR. Escalate hard reasoning tickets to deepseek-v4-pro or a Claude-class Keyo model without splitting vendors. OpenAI SDK migration is two lines — base URL and model — then you are live. Quick start: sign up, mint a key, curl deepseek-v4-flash-free, run your eval suite, then flip to deepseek-v4-flash. Cross-link /model/deepseek-v4-pro, /free-models, and /gemini-api-pricing if you are still shopping families. Keep an eye on catalog prices; relay sell rates move with upstream cost. DeepSeek V4 Flash on KeyoAPI is the practical fast lane: clear IDs, honest free tier, and a path into the broader deepseek api pricing conversation without thin orphan pages for phrases nobody searches.
Free tier available
Same model family on KeyoAPI: use deepseek-v4-flash-free for permanent $0 fair-use calls (Keyo Free channel), or deepseek-v4-flash for token-metered production traffic.
Rules: free = *-free suffix; paid = bare ID. Fair-use rate/concurrency limits apply on free — see /free-models.
Free curl
curl https://www.keyoapi.xyz/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"deepseek-v4-flash-free","messages":[{"role":"user","content":"Hello"}]}'Paid curl
curl https://www.keyoapi.xyz/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"Hello"}]}'Quick start
Base URL: https://www.keyoapi.xyz/v1
Endpoint: POST /v1/chat/completions
Model: model=deepseek-v4-flash
curl https://www.keyoapi.xyz/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"Hello from DeepSeek V4 Flash"}]}'Auth uses the same Bearer API key as chat. Full notes: Keyo docs.
FAQ
What is the free model ID for DeepSeek V4 Flash?
Use deepseek-v4-flash-free for permanent $0 fair-use calls. Paid traffic uses deepseek-v4-flash.
Why is Flash cheaper than Pro?
Flash is the high-throughput twin in the V4 family. Keyo lists it around $1.10 / $3.30 per 1M in/out versus Pro at about $3.30 / $9.90. Confirm live rates on /pricing.
Is “deepseek v4 flash api” a useful keyword?
US search volume for that exact phrase is effectively empty. This page targets the bare deepseek v4 flash discussion query plus practical relay how-to — not a thin api-suffix orphan page.