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GPT-4.1 nano

OpenAI

80·Strong

Overall Trust Score

OpenAI's smallest and most efficient GPT-4.1 variant, designed for high-volume, cost-sensitive applications. Optimized for speed and resource efficiency with basic capabilities.

efficient
low-latency
cost-effective
basic
high-volume
real-time
Version: 2025-01
Last Evaluated: November 8, 2025
Official Website →

Trust Vector

Performance & Reliability

68

Basic performance optimized for speed and efficiency. Best for simple tasks where ultra-low latency and cost are priorities.

task accuracy code
64
Methodology
Industry-standard coding benchmarks measuring basic programming tasks
Evidence
HumanEval Benchmark
29.4% pass rate
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
task accuracy reasoning
66
Methodology
Basic reasoning benchmarks
Evidence
MATH Benchmark
35% on mathematical reasoning tasks
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
task accuracy general
70
Methodology
Crowdsourced comparisons and knowledge testing
Evidence
MMLU Benchmark
50.3% on multitask language understanding
Date: 2025-01-15
LMSYS Chatbot Arena
1050 ELO (Entry-level performance)
Date: 2025-01-20
Confidence: highLast verified: 2025-11-08
output consistency
72
Methodology
Internal testing with repeated prompts
Evidence
OpenAI Internal Testing
Reasonable consistency for simple tasks
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
Note: More variance in outputs compared to larger models
latency p50
Value: 0.4s
Methodology
Median latency for API requests
Evidence
OpenAI Documentation
Ultra-fast response time ~0.4s
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
latency p95
Value: 0.8s
Methodology
95th percentile response time
Evidence
Community benchmarking
p95 latency ~0.8s
Date: 2025-01-25
Confidence: highLast verified: 2025-11-08
context window
Value: 32,000 tokens
Methodology
Official specification from provider
Evidence
OpenAI API Documentation
32K token context window
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
uptime
98
Methodology
Historical uptime data from official status page
Evidence
OpenAI Status Page
99.9% uptime (last 90 days)
Date: 2025-11-01
Confidence: highLast verified: 2025-11-08

Security

82

Good security posture with standard OpenAI safety measures. Smaller model may have slightly lower resistance to adversarial attacks.

prompt injection resistance
78
Methodology
Testing against OWASP LLM01 prompt injection attacks
Evidence
OpenAI Safety Testing
Moderate resistance to prompt injection
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
jailbreak resistance
80
Methodology
Testing against adversarial prompt datasets
Evidence
OpenAI Safety Evaluations
Basic safety mechanisms in place
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
data leakage prevention
83
Methodology
Analysis of privacy policies and data handling practices
Evidence
OpenAI Privacy Policy
API data not used for training by default
Date: 2024-12-15
Confidence: mediumLast verified: 2025-11-08
output safety
84
Methodology
Safety testing across harmful content categories
Evidence
OpenAI Safety Benchmarks
Standard content filtering applied
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
api security
85
Methodology
Review of API security features and best practices
Evidence
OpenAI API Documentation
API key authentication, HTTPS only, rate limiting
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08

Privacy & Compliance

84

Standard OpenAI privacy practices. 30-day data retention for abuse monitoring.

data residency
Value: US (primary)
Methodology
Review of enterprise documentation and privacy policies
Evidence
OpenAI Documentation
US-based infrastructure
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
training data optout
90
Methodology
Analysis of privacy policy and data usage terms
Evidence
OpenAI Privacy Policy
API data not used for training by default
Date: 2024-12-15
Confidence: highLast verified: 2025-11-08
data retention
Value: 30 days
Methodology
Review of terms of service and data retention policies
Evidence
OpenAI Terms of Service
API data retained for 30 days for abuse monitoring
Date: 2024-12-15
Confidence: highLast verified: 2025-11-08
pii handling
82
Methodology
Review of data protection capabilities
Evidence
OpenAI Privacy Documentation
Customer responsible for PII redaction
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
compliance certifications
88
Methodology
Verification of compliance certifications
Evidence
OpenAI Trust Portal
SOC 2 Type II, GDPR compliant
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
zero data retention
75
Methodology
Review of data handling practices
Evidence
OpenAI API Documentation
30-day retention for abuse monitoring
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08

Trust & Transparency

76

Basic transparency features. Smaller model size limits explainability depth. Higher hallucination rate than premium models.

explainability
72
Methodology
Evaluation of reasoning transparency
Evidence
Model Behavior
Basic explanations, less detailed than larger models
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
hallucination rate
74
Methodology
Testing on factual QA datasets
Evidence
SimpleQA Benchmark
Moderate hallucination rate on simple queries
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
Note: Higher hallucination rate than larger models
bias fairness
76
Methodology
Evaluation on bias benchmarks
Evidence
OpenAI Safety Report
Regular bias testing applied
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
uncertainty quantification
73
Methodology
Qualitative assessment of confidence expression
Evidence
Model Behavior
Limited uncertainty expression
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
model card quality
82
Methodology
Review of documentation completeness
Evidence
OpenAI Model Documentation
Good documentation with capabilities and limitations
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
training data transparency
74
Methodology
Review of public disclosures about training data
Evidence
OpenAI Public Statements
General description provided
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
guardrails
80
Methodology
Analysis of built-in safety mechanisms
Evidence
OpenAI Safety Systems
Standard safety guardrails
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08

Operational Excellence

88

Excellent operational maturity leveraging OpenAI's established infrastructure. Same high-quality developer experience as larger models.

api design quality
91
Methodology
Review of API design and consistency
Evidence
OpenAI API Documentation
Consistent RESTful API across model family
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
sdk quality
93
Methodology
Review of SDK quality and maintenance
Evidence
OpenAI SDKs
Official SDKs for Python, Node.js
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
versioning policy
85
Methodology
Review of versioning policy
Evidence
OpenAI API Versioning
Clear versioning with deprecation notices
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
monitoring observability
84
Methodology
Review of monitoring tools
Evidence
OpenAI Dashboard
Usage dashboard with basic metrics
Date: 2025-01-15
Confidence: mediumLast verified: 2025-11-08
support quality
87
Methodology
Assessment of support channels
Evidence
OpenAI Support
Email support, forum community
Date: 2025-01-15
Confidence: highLast verified: 2025-11-08
ecosystem maturity
94
Methodology
Analysis of third-party integrations
Evidence
GitHub Ecosystem
Mature ecosystem with extensive integrations
Date: 2025-11-01
Confidence: highLast verified: 2025-11-08
license terms
90
Methodology
Review of licensing terms
Evidence
OpenAI Terms of Service
Standard commercial terms
Date: 2024-12-15
Confidence: highLast verified: 2025-11-08

✨ Strengths

  • Ultra-low latency (~0.4s p50) ideal for real-time applications
  • Most cost-effective option in GPT-4.1 family
  • Good for high-volume, simple tasks
  • Smaller context window reduces processing overhead
  • Same API and ecosystem as premium OpenAI models
  • Reliable uptime and infrastructure

⚠️ Limitations

  • Limited coding capabilities (29.4% HumanEval)
  • Basic reasoning and knowledge (50.3% MMLU)
  • Higher hallucination rate than larger models
  • Not suitable for complex or specialized tasks
  • 30-day data retention
  • Limited context window (32K tokens)

📊 Metadata

pricing:
input: $0.15 per 1M tokens
output: $0.60 per 1M tokens
notes: Most cost-effective option for high-volume applications
context window: 32000
languages:
0: English
1: Spanish
2: French
3: German
4: Italian
5: Portuguese
6: Japanese
7: Korean
8: Chinese
modalities:
0: text
api endpoint: https://api.openai.com/v1/chat/completions
open source: false
architecture: Transformer-based, optimized for efficiency
parameters: Not disclosed (small)

Use Case Ratings

code generation

60

Basic code generation for simple tasks. 29.4% HumanEval indicates limited capability for complex programming.

customer support

78

Good for high-volume, simple customer queries. Fast response times make it suitable for basic support automation.

content creation

70

Adequate for simple content tasks. Limited creativity and depth compared to larger models.

data analysis

65

Basic data interpretation. Not suitable for complex analytical tasks.

research assistant

68

Suitable for simple research queries and summaries. Limited depth for complex topics.

legal compliance

62

Not recommended for legal applications due to limited accuracy and reasoning.

healthcare

60

Not suitable for healthcare applications. Lacks accuracy and HIPAA eligibility.

financial analysis

64

Basic financial calculations only. Not suitable for complex financial modeling.

education

72

Suitable for basic educational content and simple tutoring. Limited for advanced topics.

creative writing

68

Basic creative writing. Less nuanced and creative than larger models.