DeepSeek: DeepSeek V3.1

Text input Text output
Author's Description

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...

Key Specifications
Cost
$$$
Context
131K
Parameters
671B (Rumoured)
Released
Aug 21, 2025
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Top P Presence Penalty Top Logprobs Include Reasoning Response Format Temperature Logprobs Reasoning Tools Tool Choice Max Tokens Frequency Penalty Stop
Features

This model supports the following features:

Tools Reasoning Response Format
Performance Summary

DeepSeek V3.1 demonstrates a balanced performance profile, excelling in reliability and offering competitive pricing, while exhibiting moderate speed. It achieves an exceptional 100% success rate across all benchmarks, indicating robust technical stability. Its pricing is competitive, ranking in the 58th percentile. Speed performance is moderate, placing it in the 33rd percentile. The model shows strong capabilities in several key areas. It achieved perfect accuracy in Ethics, making it the most accurate model at its price point and among models of similar speed. General Knowledge and Hallucinations benchmarks also show high accuracy at 99.5% and 98.0% respectively, suggesting a broad understanding and a low propensity for generating fabricated information. Instruction Following and Coding also present solid results at 70.0% and 89.0% accuracy. While its Reasoning score of 80.0% is respectable, it indicates room for improvement compared to its top-tier performance in other categories. Mathematics, at 90.9%, is strong, and Email Classification is also robust at 98.0%. The model's long-context training and hybrid reasoning approach appear to contribute to its overall strong performance, particularly in complex tasks and agentic workflows.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.21
Completion $0.79
Input Cache Read $0.13

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
DeepSeek
DeepSeek | deepseek/deepseek-chat-v3.1 131K $0.21 / 1M tokens $0.79 / 1M tokens
Chutes
Chutes | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
AtlasCloud
AtlasCloud | deepseek/deepseek-chat-v3.1 131K $0.3 / 1M tokens $0.95 / 1M tokens
Novita
Novita | deepseek/deepseek-chat-v3.1 131K $0.21 / 1M tokens $0.79 / 1M tokens
GMICloud
GMICloud | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
Fireworks
Fireworks | deepseek/deepseek-chat-v3.1 163K $0.56 / 1M tokens $1.68 / 1M tokens
Parasail
Parasail | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
Parasail
Parasail | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
DeepInfra
DeepInfra | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
DeepInfra
DeepInfra | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
SambaNova
SambaNova | deepseek/deepseek-chat-v3.1 32K $0.21 / 1M tokens $0.79 / 1M tokens
SiliconFlow
SiliconFlow | deepseek/deepseek-chat-v3.1 163K $0.27 / 1M tokens $1 / 1M tokens
WandB
WandB | deepseek/deepseek-chat-v3.1 161K $0.55 / 1M tokens $1.65 / 1M tokens
SambaNova
SambaNova | deepseek/deepseek-chat-v3.1 131K $0.65 / 1M tokens $1.5 / 1M tokens
Google
Google | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
Chutes
Chutes | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
Novita
Novita | deepseek/deepseek-chat-v3.1 131K $0.27 / 1M tokens $1 / 1M tokens
BytePlus
BytePlus | deepseek/deepseek-chat-v3.1 128K $0.21 / 1M tokens $0.79 / 1M tokens
Friendli
Friendli | deepseek/deepseek-chat-v3.1 131K $0.21 / 1M tokens $0.79 / 1M tokens
SambaNova
SambaNova | deepseek/deepseek-chat-v3.1 32K $0.21 / 1M tokens $0.79 / 1M tokens
ModelRun
ModelRun | deepseek/deepseek-chat-v3.1 163K $0.21 / 1M tokens $0.79 / 1M tokens
Together
Together | deepseek/deepseek-chat-v3.1 131K $0.6 / 1M tokens $1.7 / 1M tokens
Mara
Mara | deepseek/deepseek-chat-v3.1 131K $0.21 / 1M tokens $0.79 / 1M tokens
Google
Google | deepseek/deepseek-chat-v3.1 163K $0.6 / 1M tokens $1.7 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
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