About DeepSeek-V4.io

DeepSeek-V4.io is an independent, third-party chat and API gateway that provides hosted access to a DeepSeek text model; it is not the official DeepSeek website and is not affiliated with or endorsed by DeepSeek. It is aimed at developers and everyday users who want to try a hosted chat or connect applications and coding agents to a DeepSeek-compatible API.

A new account signs in with Google or email verification and receives a 10K signup balance to try the hosted chat for explanations, summaries, writing or code help, optionally with web search for current sources or an attached document of up to 5 MB. Developers can create an API key after buying a one-time usage pack and connect through three familiar formats: OpenAI-compatible Chat Completions, a Responses format, and an Anthropic Messages format.

The public gateway currently exposes a single model, deepseek-v4-flash, for text input; image input, image generation and OCR for scanned PDFs are not available. Chat and API usage draw from one shared account balance rather than a monthly subscription, and usage packs are a one-time purchase, Starter at $10 or Pro at $29, that top up that balance.

DeepSeek-V4.io keeps its own accounts, API keys and billing separate from both the official DeepSeek platform and OpenRouter, and states that a purchase here does not fund an official DeepSeek or OpenRouter account. Conversations are saved to the account, and inputs, attachments and search queries are processed by the configured model and search providers.

Use cases

Comparing two approaches and citing current sources
Connecting a coding agent or application to the API

Key features

Hosted chat with web search and document analysis
Three OpenAI/Responses/Anthropic-compatible API formats
One shared balance across chat and API usage
Free signup balance to try the hosted chat
One-time usage packs instead of a subscription
Upload up to five documents per conversation

Pros and cons

Cons

Image input, image generation and OCR for scanned PDFs are not available

Not affiliated with or endorsed by the official DeepSeek service

Pricing

Starter

$10

Continue a task

Pro

$29

Ongoing work

Reviews

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Frequently asked questions

Can I try the chat for free?

Yes, new accounts receive a 10K signup balance for trying the hosted chat; creating an API key requires a paid one-time usage pack.

Is this the official DeepSeek API?

No, DeepSeek-V4.io is an independent gateway with its own accounts, API keys and balance, separate from official DeepSeek and OpenRouter.

Do chat and API use the same balance?

Yes, paid usage packs add a one-time balance that funds both hosted chat and API requests, with no recurring subscription.

How is my content handled?

Conversations are saved to the account; messages and extracted text are processed by the configured model provider, and search queries by the search provider when Web Search is enabled.

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