Model detail
DeepSeek-V3.2 251201
DeepSeek-V3.2 is a large language model designed to harmonize high computational efficiency with strong reasoning and agentic tool-use performance. It introduces DeepSeek Sparse Attention (DSA), a fine-grained sparse attention mechanism that reduces training and inference cost while preserving quality in long-context scenarios. A scalable reinforcement learning post-training framework further improves reasoning, with reported performance in the GPT-5 class, and the model has demonstrated gold-medal results on the 2025 IMO and IOI. V3.2 also uses a large-scale agentic task synthesis pipeline to better integrate reasoning into tool-use settings, boosting compliance and generalization in interactive environments. Users can control the reasoning behaviour with the `reasoning` `enabled` boolean. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#enable-reasoning-with-default-config)
Model specs
- Model ID
-
deepseek-v3-2-251201
- Context length
- 163.84K
- Max output
- 65.536K
- I/O modalities
- Released
- 2025-12
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API endpoints
One MixRoute gateway, OpenAI-compatible
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OpenAI-compatible
/v1/chat/completionsPOST
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Pricing
Flat rate, unit: /1M Tokens
Input
$0.2800 /1M Tokens
Completion
$0.4200 /1M Tokens
Cache read
$0.0280 /1M Tokens
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Selection summary
Quickly judge whether it fits your workload
What is this model good for?
Large language model designed to harmonize high computational efficiency
DeepSeek-V3.2 is a large language model designed to harmonize high computational efficiency with strong reasoning and agentic tool-use performance.
What should you check before using it?
163,840 context, 65,536 output tokens
DeepSeek model that supports reasoning and tool calling. Released 2025-12-01.
Why use it through MixRoute?
Swap the base URL, keep the DeepSeek-V3.2 client
MixRoute serves DeepSeek-V3.2 on the OpenAI-compatible endpoint /v1/chat/completions; point your existing client at https://api.mixroute.ai/v1 with the model ID deepseek-v3-2-251201 and re-run your integration tests.
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Capabilities & compatibility
Unconfirmed capabilities stay "Unknown," no guesses
Tool calling
DeepSeek-V3.2 supports function and tool calls.
tools definition; the response returns tool_calls to execute and feed results back.
Structured output
DeepSeek-V3.2 can produce JSON-formatted output on demand.
response_format: { type: "json_schema" } forces valid JSON output.
Streaming
DeepSeek-V3.2 supports streamed responses.
stream: true streams tokens incrementally, so chat UIs render as they arrive.
Prompt caching
DeepSeek-V3.2 supports prompt caching under supported routing conditions.
OpenAI SDK
Call DeepSeek-V3.2 through MixRoute's OpenAI-compatible endpoint.
base_url to https://api.mixroute.ai/v1; everything else follows the OpenAI style.
08
Token cost estimator
Live estimate from this page's pricing, not an actual bill
Share of the same prefix read repeatedly, up to 100%
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FAQ
DeepSeek-V3.2 was released on 2025-12-01. Its catalog status is stable. Check the model page for deprecation notices before you build a long-lived integration on it.
One endpoint, a testable decision
Test this model and alternate routes with the same request format
Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.