DeepSeek V3.1
DeepSeek V3.1 is a reasoning model from DeepSeek released on Jan 1, 2025. It reads text and writes text, with a 164K token context window and up to 33K tokens per reply.
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It costs $0.25 per million input tokens and $0.95 per million output tokens. Cached input bills at $0.13, 48% less than fresh input.
It supports tool calling, structured JSON output and prompt caching, and its weights are open, so you can host it yourself.
13 providers serve it, including Deep Infra, Vercel AI Gateway and Hugging Face. The lowest input price is $0.19 per million tokens at TokenGo.
- Modalities
- In / out price
- $0.25 / $0.95 per 1M
- Context
- 164K
- Max output
- 33K
- Released
- Jan 1, 2025
- Knowledge cutoff
- Mar 2025
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
DeepSeek V3.1 pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.25 / 1M tokens | |
|---|---|---|
| Output | $0.95 / 1M tokens | |
| Cached input (read) | $0.13 / 1M tokens | 48% off input |
DeepSeek V3.1 providers
13 providers serve it, including Deep Infra, Vercel AI Gateway and Hugging Face. The lowest input price is $0.19 per million tokens at TokenGo. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Deep Infra | $0.25 | $0.95 | $0.13 | 164K | 8K |
| Vercel AI Gateway | $0.25 | $0.95 | $0.13 | 164K | 128K |
| Hugging Face | $0.27 | $1 | – | 131K | 8K |
| Amazon Bedrock | $0.58 | $1.68 | – | 164K | 82K |
| SambaNova | $3 | $4.50 | – | 131K | 7K |
| TokenGo | $0.19 | $0.71 | $0.06 | 131K | 8K |
| Kilo Gateway | $0.25 | $0.95 | $0.13 | 164K | 33K |
| Jiekou.AI | $0.27 | $1 | – | 164K | 33K |
| Merge Gateway | $0.50 | $1.50 | – | 164K | 41K |
| Abacus | $0.55 | $1.66 | – | 128K | 8K |
| CoreWeave | $0.55 | $1.65 | $0.55 | 161K | 161K |
| Pioneer | $0.56 | $1.68 | $0.56 | 164K | 131K |
Showing 12 of 13 providers: the lab first, then the major clouds, then the cheapest resellers.
What DeepSeek V3.1 costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call DeepSeek V3.1 through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning - Temperature
temperature
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DeepSeek V3.1 questions
How much does the DeepSeek V3.1 API cost?
$0.25 per million input tokens and $0.95 per million output tokens, with cached input at $0.13. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of DeepSeek V3.1?
163,840 tokens of input, and it can write up to 32,768 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve DeepSeek V3.1?
13 providers serve it, including Deep Infra, Vercel AI Gateway and Hugging Face. The lowest input price is $0.19 per million tokens at TokenGo. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does DeepSeek V3.1 support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is DeepSeek V3.1 open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was DeepSeek V3.1 released?
Jan 1, 2025, with training data up to Mar 2025.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.
Building on DeepSeek V3.1?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
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