Last refreshed 2026-10-17. Next refresh: weekly.
Why use DeepSeek V3.1 on OpenRouter?
OpenRouter offers DeepSeek V3.1 with competitive pricing. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare DeepSeek V3.1 across 10 providers to find the best fit for your use caseInput / 1M
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Output / 1M
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Cache
Not sourced
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: deepseek/deepseek-chat-v3.1Model ID
deepseek/deepseek-chat-v3.1Request example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
deepseek/deepseek-chat-v3.1.Gotchas
- Use provider model ID "deepseek/deepseek-chat-v3.1", not the LLMReference slug "deepseek-v3.1".
Compare DeepSeek V3.1 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Microsoft Foundry | — | — |
| Fireworks AI | $0.56 | $1.68 |
| OpenRouter | — | — |
| NVIDIA NIM | — | — |
| Together AI | $0.60 | $1.70 |
Capabilities
Structured OutputsCode Execution
About DeepSeek V3.1
Hybrid thinking/non-thinking text model from DeepSeek with tool use, agent support and a 128K context window.
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Model Specs
Released2025-08-21
Parameters671B total, 37B active (MoE)
Context128K
ArchitectureMixture of Experts