GPT-5 Mini is a faster, more cost-efficient version of GPT-5, optimized for well-defined tasks and precise prompts at scale.

How good is GPT-5 Mini?

GPT-5 Mini offers good performance for straightforward tasks at a fraction of the cost, though it may not match GPT-5 on complex reasoning.

What can GPT-5 Mini do?

It excels at cost-effective solutions, quick responses, simpler coding tasks, and high-volume processing of well-defined prompts.

When should I use GPT-5 Mini vs GPT-5?

Use GPT-5 Mini for straightforward tasks where cost is a priority. Use GPT-5 for complex reasoning requiring deeper understanding.

How much does GPT-5 Mini cost?

GPT-5 Mini pricing is $0.25 per 1M input tokens and $2.00 per 1M output tokens. Cached input tokens cost $0.025 per 1M.

LangFast

Beta

GPT-5 Mini

Cheaper GPT-5 for structured tasks and reasoning at scale.

Try in Playground

Community Sentiment

Mixed

Based on Reddit reviews

Community Verdict

Best for Budget Tasks

Based on Reddit reviews

Input Modalities

Text, Images

Output Modalities

Text

Price / 1M tokens

$0.25$2

InputOutput

Best For

Cost-effective for straightforward tasks

Well-defined work with clear prompts

Fast responses with low overhead

Overflow when larger models hit rate limits

Simple coding and routine ops

High-volume, low-complexity workloads

Avoid For

Complex tasks needing deep reasoning or context

Cache-heavy apps (reported inconsistencies)

Nuanced understanding and high-level comprehension

Heavy, resource-intensive workflows

When GPT-5 / GPT-5.1 quality is required

128,000 context window

65,536 max output tokens

Jan 1, 2024 knowledge cutoff

Reasoning 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-5 Mini API parameters and allowed values.

Parameter	Description	Path	Supported Values
Model	Selects the model version for the request	model	gpt-5-mini
Message roles	Defines the role of the message in the input	messages[].role	developersystemuserassistant
Reasoning effort	Controls the depth of internal reasoning used by the model	reasoning_effort	minimallowmediumhigh
Reasoning summary	Controls whether the model produces a concise or detailed reasoning summary	reasoning_summary	detailedconciseautonull
Max output tokens	Max output tokens the model may generate	max_completion_tokens	16 .. 65,536
Verbosity	Controls how brief or detailed the generated response is	verbosity	lowmediumhigh
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	Not supported
Top P	Controls how diverse the output tokens are	top_p	Not supported
Presence penalty	Encourages the model to introduce new topics	presence_penalty	Not supported
Frequency penalty	Reduces repetition of the same words or phrases	frequency_penalty	Not supported

Pricing

GPT-5 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$0.25

Cached input$0.03

Output$2.00

Example costs (GPT-5 Mini)

TASK

APPROX COST

Simple chat (1k tokens)

~$0.0003

Document summarization

~$0.005–$0.02

High-volume batch processing

~$0.01–$0.05 per request

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-tuningNot supported

DistillationNot supported

Predicted outputsNot supported

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-5 Mini model snapshots ensure stable behavior by locking a specific version. See all available snapshots and aliases below.

gpt-5-mini

↪ gpt-5-mini-2025-08-07

gpt-5-mini-2025-08-07

FAQs

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