DeepSeek V4.1 Flash API: pricing, base URL and quick setup
Use DeepSeek V4.1 Flash on A2Agent with model ID deepseek-v4.1-flash. The catalog lists a 1M context window. Check token rates below and verify the features your app needs.
Specifications and pricing
| Model ID | deepseek-v4.1-flash |
|---|---|
| Platform | DeepSeek |
| Context window | 1M |
| Tagged for | chat, reasoning, vision |
| Discount | — |
| Input / 1M tokens | — |
| Output / 1M tokens | — |
USD per 1M tokens. Final billing depends on your API key group and metered usage.
What DeepSeek V4.1 Flash costs on A2Agent
Prices on this page come from the live catalog. Compare the official price with the A2Agent price in the table above, then multiply by your monthly token volume.
Quick setup
curl https://a2agent.me/v1/chat/completions \
-H "content-type: application/json" \
-H "authorization: Bearer sk-your-a2agent-key" \
-d '{
"model": "deepseek-v4.1-flash",
"messages": [{"role": "user", "content": "Reply with OK"}]
}'Using it from a coding client
Use deepseek-v4.1-flash as the model ID in your client. Follow its connection guide and check a short request before testing tool calls or long conversations.
How it compares within its family
These comparisons use catalog context limits, tags and reference rates, not independent quality benchmarks. Rates can change. Check current pricing above and test your workload; a higher price or a larger context window does not establish better results.
DeepSeek V4.1 Flash is listed separately from V4 Flash and V4 Pro in the A2Agent catalog. Select deepseek-v4.1-flash explicitly when configuring a client; the V4 Flash ID selects a different entry. The rates and discount shown above come from the live catalog, so compare those figures when choosing between the entries. Input and output are priced separately, so include both when estimating the cost of a conversation. A dash in a price field means that a rate is unavailable. The DeepSeek Models & Pricing page lists a 1M context length for V4.1 Flash (checked October 12, 2026), the same figure it gives V4 Pro. For a migration, check your prompt sizes and required features, then compare outputs on the same tasks before changing the model used by an existing application.
Other models on this platform
Questions
Which model ID should I use?
Use deepseek-v4.1-flash. The deepseek-v4-flash ID refers to the separate V4 Flash entry.
What is the context window?
1M tokens, per the DeepSeek Models & Pricing page (checked October 12, 2026).
Where do the displayed prices come from?
The live A2Agent catalog supplies the token rates and discount. Price fields remain blank when those rates are unavailable; V4 Flash prices are not substituted.
Does this page confirm reasoning or tool-calling support?
The listing carries the reasoning and vision tags. Both come from the DeepSeek Models & Pricing page, which also marks tool calls as supported. None of it has been tested through this gateway, so check the features your client needs with your assigned API key before moving an existing workflow.
Billed per token. Top up from $5, no top-up fee.