Nex AGI: DeepSeek V3.1 Nex N1

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Author's Description

DeepSeek V3.1 Nex-N1 is the flagship release of the Nex-N1 series — a post-trained model designed to highlight agent autonomy, tool use, and real-world productivity. Nex-N1 demonstrates competitive performance across all evaluation scenarios, showing particularly strong results in practical coding and HTML generation tasks.

Key Specifications
Cost
$$$
Context
131K
Released
Dec 08, 2025
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Top P Tool Choice Temperature Structured Outputs Response Format Tools Frequency Penalty
Features

This model supports the following features:

Structured Outputs Response Format Tools
Performance Summary

DeepSeek V3.1 Nex-N1, the flagship model from nex-agi, demonstrates competitive performance across various evaluation scenarios, particularly excelling in practical coding and HTML generation tasks. The model exhibits competitive response times, ranking in the 45th percentile for speed across eight benchmarks. It also offers cost-effective solutions, placing in the 60th percentile for price. A standout feature is its exceptional reliability, achieving a 100% success rate across all benchmarks, indicating consistent and usable responses. In terms of specific benchmarks, Nex-N1 achieved perfect accuracy in Hallucinations and Ethics tests, showcasing its ability to acknowledge uncertainty and adhere to ethical principles. It performed strongly in General Knowledge (98.5% accuracy) and Mathematics (91.0% accuracy), ranking in the 59th and 66th percentiles respectively. The model also demonstrated robust Instruction Following (69.0% accuracy, 77th percentile) and Reasoning (80.0% accuracy, 69th percentile) capabilities. While its Coding accuracy was 84.0% (53rd percentile), its Email Classification accuracy was 96.0% (37th percentile), indicating some room for improvement in this specific area compared to other models. Overall, Nex-N1 is a reliable and cost-effective model with strong general capabilities and particular strengths in ethical reasoning and avoiding hallucinations.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.27
Completion $1

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
SiliconFlow
SiliconFlow | nex-agi/deepseek-v3.1-nex-n1 131K $0.27 / 1M tokens $1 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration