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Chat with DeepSeek: DeepSeek V4 Flash

Commercial use OK 380+ models No watermark No sign-up needed
Model:
+ GPT-5, Claude, Gemini
Chat model Premium 1048576 ctx
DeepSeek: DeepSeek V4 Flash — DeepSeek: DeepSeek V4 Flash is an AI model by DeepSeek on Free.ai. It supports up to 1,048,576 tokens of context. Costs approximately 173 tokens per message. Try DeepSeek: DeepSeek V4 Flash instantly — no sign up needed. Compare it side-by…
~173 tokens/message

What is DeepSeek: DeepSeek V4 Flash?

DeepSeek: DeepSeek V4 Flash is an AI model by DeepSeek on Free.ai. It supports up to 1,048,576 tokens of context. Costs approximately 173 tokens per message. Try DeepSeek: DeepSeek V4 Flash instantly — no sign up needed. Compare it side-by-side with other models.

Why use DeepSeek: DeepSeek V4 Flash for chat?

Streaming responses

Replies stream token-by-token within ~1 second of pressing Send. No idle waiting.

Saved history

Signed-in users see every chat in /account/?tab=history with one-click share links.

Compare side by side

Send the same prompt to two models at /chat/compare/ and judge the outputs side by side.

Commercial use OK

Outputs are yours. Use them in apps, ads, docs, or anything else without attribution.

Sample prompts

Explain the difference between TCP and UDP in one paragraph
Write a friendly out-of-office reply that mentions a return date
Summarize the plot of The Three-Body Problem in 5 bullet points
Suggest 5 unique gift ideas for a friend who loves baking
Help me brainstorm a name for a small landscaping business in Texas

Pricing

Premium chat. Cost is per message — typically ~173 tokens. $1 buys 750,000 tokens, so even paid models cost cents per chat. Free signups get 10,000 tokens to try.

Compare to alternatives

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Full model reference → · See all chat models → · Compare 2 chat models side-by-side →

Advanced options
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DeepSeek: DeepSeek V4 Flash is an AI model by DeepSeek on Free.ai. It supports up to 1,048,576 tokens of context. Costs approximately 173 tokens per messag...

Bii o ṣe le lo Chat with DeepSeek: DeepSeek V4 Flash

1
Fi àwọn ìṣàmúlò-ètò rẹ̀ pamọ́

Ṣàfihàn àkọlé, láti fi fáìlì pamọ́, tàbí láti ṣàfihàn ohun tí o fẹ́. Kò ní àwọn àwọn kọ́̀ǹpútà tí a fẹ́.

2
Tẹ̀ láti ṣẹ̀dà

AI wá ń ṣé iṣẹ́ àgbèkalẹ̀ rẹ̀ nínú àwọn ìṣísẹ̀ láti ló àwọn módèlè̀ tí a ṣí lè lò.

3
Ṣàfikún & Àwọn Àkọsílẹ̀

Ṣàfihàn, kọ́, tàbí fi àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn àwọn

Use this tool via API

Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.

API Documentation Get API Key 
curl -X POST https://api.free.ai/v1/chat/ \
  -H "Authorization: Bearer sk-free-..." \
  -H "Content-Type: application/json" \
  -d '{"model": "qwen7b", "messages": [{"role": "user", "content": "Hello"}]}'

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Chat with DeepSeek: DeepSeek V4 Flash — FAQ

DeepSeek: DeepSeek V4 Flash is an AI model by DeepSeek on Free.ai. It supports up to 1,048,576 tokens of context. Costs approximately 173 tokens per message. Try DeepSeek: DeepSeek V4 Flash instantly — no sign up needed. Compare it side-by-side with other models.

DeepSeek: DeepSeek V4 Flash works well for general conversation, writing assistance, brainstorming, code help, and analysis. Try the sample prompts above to see its style.

About 173 tokens per average message. $1 buys 750,000 tokens, so even paid models cost cents per chat. Free accounts get 10,000 signup tokens plus a daily pool.

It depends on the task. /chat/compare/ lets you send the same prompt to DeepSeek: DeepSeek V4 Flash and any other model side-by-side — comparison is the fastest way to decide.

Yes. Outputs are yours — Free.ai does not claim rights to anything you generate.

1,048,576 tokens.

Replies stream token-by-token within ~1 second. Total response time depends on length and model size — small models stream faster, frontier models trade speed for depth.

Yes. Signed-in users see every chat in /account/?tab=history. You can also share a one-link copy of any conversation via the Share button.

Free.ai does not train models on your conversations. Self-hosted models stay on our GPUs. Premium models route to the upstream provider for inference.

Yes. POST to /v1/chat/ with model="deepseek/deepseek-v4-flash" and a messages array. Streaming SSE is supported. Full reference: /api/.

DeepSeek: DeepSeek V4 Flash is a premium model served by an external provider, so self-hosting is not available. Free.ai exposes it through token-based pricing.

Free accounts get 10,000 signup tokens plus a daily pool. When that runs out, top up starting at $1 (750K tokens) — no subscription required.

Sign up free for 10,000 tokens

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