What is GPT-4.1 Mini?

GPT-4.1 Mini is a cheaper variant of GPT-4.1 optimized for large-scale document processing and cost-effective instruction following.

How good is GPT-4.1 Mini?

It achieved 60% improvement in code acceptance rates and scored 85% on HumanEval, surpassing GPT-4o Mini's 78%.

What can GPT-4.1 Mini do?

It excels at instruction following, tool integration, long-context tasks, and coding assistance at reduced costs.

When should I use GPT-4.1 Mini vs GPT-4.1?

Use GPT-4.1 Mini for cost-sensitive workloads. Use full GPT-4.1 when maximum quality is required.

How much does GPT-4.1 Mini cost?

GPT-4.1 Mini pricing is $0.40 per 1M input tokens and $1.60 per 1M output tokens. Cached input tokens cost $0.10 per 1M.

LangFast

Beta

GPT-4.1 Mini

Cheaper GPT-4.1 for large-scale document processing.

Try in Playground

Community Sentiment

Mostly Positive

Based on Reddit reviews

Community Verdict

Best for Tool Integration

Based on Reddit reviews

Input Modalities

Text, Images

Output Modalities

Text

Price / 1M tokens

$0.4$1.6

InputOutput

Best For

Cost-effective instruction following

Workflow automation via tools/APIs

Long-context tasks (1M tokens)

Coding help with better context

Low-latency at lower cost

Best balance of performance/cost

Avoid For

Fine-tuned models (performance issues)

Multilingual apps (weak non-English)

Strict JSON output (malformed JSON)

Long chats (coherence drift)

When GPT-4.1 quality is required

1,000,000 context window

32,768 max output tokens

Jan 1, 2024 knowledge cutoff

Reasoning not supported

Parameters

While OpenAI documents a unified parameter set for the Chat Completions and Responses APIs, each model supports only a limited subset of model-specific parameters and values. This table lists the supported model-specific GPT-4.1 Mini API parameters and allowed values.

Parameter	Description	Path	Supported Values
Model	Selects the model version for the request	model	gpt-4.1-minigpt-4.1-mini-2025-04-14
Message roles	Defines the role of the message in the input	messages[].role	developersystemuserassistant
Max output tokens	Max output tokens the model may generate	max_completion_tokens	16 .. 32,768
Output format	Specifies the output format, including structured JSON schemas	response_format	textjson_objectjson_schema
Temperature	Controls how random or deterministic the output is	temperature	0 .. 2
Top P	Controls how diverse the output tokens are	top_p	0 .. 1
Presence penalty	Encourages the model to introduce new topics	presence_penalty	-2 .. 2
Frequency penalty	Reduces repetition of the same words or phrases	frequency_penalty	-2 .. 2
Reasoning effort	Controls the depth of internal reasoning used by the model	reasoning_effort	Not supported
Reasoning summary	Controls whether the model produces a concise or detailed reasoning summary	reasoning_summary	Not supported
Verbosity	Controls how brief or detailed the generated response is	verbosity	Not supported

Pricing

GPT-4.1 Mini API pricing is based on token usage for input and output. Prices are listed per 1M tokens, with lower rates for cached input. Tool-specific features may add per-call fees.

Text tokens

Per 1M tokens

Input$0.40

Cached input$0.10

Output$1.60

Example costs (GPT-4.1 Mini)

TASK

APPROX COST

Process 500-page document

~$0.06–$0.16

Code assistance session

~$0.02–$0.08

Tool-integrated workflow

~$0.05–$0.20

Modalities

What the model can accept and produce

TextInput and output

ImagesInput only

AudioNot supported

VideoNot supported

Features

Platform-level capabilities

StreamingSupported

Function callingSupported

Structured outputsSupported

Fine-tuningSupported

DistillationNot supported

Predicted outputsSupported

Tools

Tools supported by this model when using the Responses API.

Web searchSupported

File searchSupported

Image generationSupported

Code interpreterSupported

MCPSupported

Computer useNot supported

Snapshots

GPT-4.1 Mini model snapshots ensure stable behavior by locking a specific version. See all available snapshots and aliases below.

gpt-4.1-mini

↪ gpt-4.1-mini-2025-04-14

gpt-4.1-mini-2025-04-14

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