GPT-4.1 nano

v2025-01

OpenAI

Modelefficientlow-latencycost-effectivebasic
80
Strong
About This Model

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.

Last Evaluated: November 8, 2025
Official Website

Trust Vector Analysis

Dimension Breakdown

🚀Performance & Reliability
+

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

task accuracy code

Industry-standard coding benchmarks measuring basic programming tasks

Evidence
HumanEval Benchmark29.4% pass rate
highVerified: 2025-11-08
task accuracy reasoning

Basic reasoning benchmarks

Evidence
MATH Benchmark35% on mathematical reasoning tasks
mediumVerified: 2025-11-08
task accuracy general

Crowdsourced comparisons and knowledge testing

Evidence
MMLU Benchmark50.3% on multitask language understanding
LMSYS Chatbot Arena1050 ELO (Entry-level performance)
highVerified: 2025-11-08
output consistency

Internal testing with repeated prompts

Evidence
OpenAI Internal TestingReasonable consistency for simple tasks
mediumVerified: 2025-11-08
latency p50

Median latency for API requests

Evidence
OpenAI DocumentationUltra-fast response time ~0.4s
highVerified: 2025-11-08
latency p95

95th percentile response time

Evidence
Community benchmarkingp95 latency ~0.8s
highVerified: 2025-11-08
context window

Official specification from provider

Evidence
OpenAI API Documentation32K token context window
highVerified: 2025-11-08
uptime

Historical uptime data from official status page

Evidence
OpenAI Status Page99.9% uptime (last 90 days)
highVerified: 2025-11-08
🛡️Security
+

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

prompt injection resistance

Testing against OWASP LLM01 prompt injection attacks

Evidence
OpenAI Safety TestingModerate resistance to prompt injection
mediumVerified: 2025-11-08
jailbreak resistance

Testing against adversarial prompt datasets

Evidence
OpenAI Safety EvaluationsBasic safety mechanisms in place
mediumVerified: 2025-11-08
data leakage prevention

Analysis of privacy policies and data handling practices

Evidence
OpenAI Privacy PolicyAPI data not used for training by default
mediumVerified: 2025-11-08
output safety

Safety testing across harmful content categories

Evidence
OpenAI Safety BenchmarksStandard content filtering applied
highVerified: 2025-11-08
api security

Review of API security features and best practices

Evidence
OpenAI API DocumentationAPI key authentication, HTTPS only, rate limiting
highVerified: 2025-11-08
🔒Privacy & Compliance
+

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

data residency

Review of enterprise documentation and privacy policies

Evidence
OpenAI DocumentationUS-based infrastructure
highVerified: 2025-11-08
training data optout

Analysis of privacy policy and data usage terms

Evidence
OpenAI Privacy PolicyAPI data not used for training by default
highVerified: 2025-11-08
data retention

Review of terms of service and data retention policies

Evidence
OpenAI Terms of ServiceAPI data retained for 30 days for abuse monitoring
highVerified: 2025-11-08
pii handling

Review of data protection capabilities

Evidence
OpenAI Privacy DocumentationCustomer responsible for PII redaction
mediumVerified: 2025-11-08
compliance certifications

Verification of compliance certifications

Evidence
OpenAI Trust PortalSOC 2 Type II, GDPR compliant
highVerified: 2025-11-08
zero data retention

Review of data handling practices

Evidence
OpenAI API Documentation30-day retention for abuse monitoring
highVerified: 2025-11-08
👁️Trust & Transparency
+

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

explainability

Evaluation of reasoning transparency

Evidence
Model BehaviorBasic explanations, less detailed than larger models
mediumVerified: 2025-11-08
hallucination rate

Testing on factual QA datasets

Evidence
SimpleQA BenchmarkModerate hallucination rate on simple queries
mediumVerified: 2025-11-08
bias fairness

Evaluation on bias benchmarks

Evidence
OpenAI Safety ReportRegular bias testing applied
mediumVerified: 2025-11-08
uncertainty quantification

Qualitative assessment of confidence expression

Evidence
Model BehaviorLimited uncertainty expression
mediumVerified: 2025-11-08
model card quality

Review of documentation completeness

Evidence
OpenAI Model DocumentationGood documentation with capabilities and limitations
highVerified: 2025-11-08
training data transparency

Review of public disclosures about training data

Evidence
OpenAI Public StatementsGeneral description provided
mediumVerified: 2025-11-08
guardrails

Analysis of built-in safety mechanisms

Evidence
OpenAI Safety SystemsStandard safety guardrails
highVerified: 2025-11-08
⚙️Operational Excellence
+

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

api design quality

Review of API design and consistency

Evidence
OpenAI API DocumentationConsistent RESTful API across model family
highVerified: 2025-11-08
sdk quality

Review of SDK quality and maintenance

Evidence
OpenAI SDKsOfficial SDKs for Python, Node.js
highVerified: 2025-11-08
versioning policy

Review of versioning policy

Evidence
OpenAI API VersioningClear versioning with deprecation notices
highVerified: 2025-11-08
monitoring observability

Review of monitoring tools

Evidence
OpenAI DashboardUsage dashboard with basic metrics
mediumVerified: 2025-11-08
support quality

Assessment of support channels

Evidence
OpenAI SupportEmail support, forum community
highVerified: 2025-11-08
ecosystem maturity

Analysis of third-party integrations

Evidence
GitHub EcosystemMature ecosystem with extensive integrations
highVerified: 2025-11-08
license terms

Review of licensing terms

Evidence
OpenAI Terms of ServiceStandard commercial terms
highVerified: 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

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

customer support

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

content creation

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

data analysis

Basic data interpretation. Not suitable for complex analytical tasks.

research assistant

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

legal compliance

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

healthcare

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

financial analysis

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

education

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

creative writing

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