OpenAIGPT-5Aug 7, 2025
GPT-5 Mini
GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost. GPT-5 Mini is the successor to OpenAI's o4-mini model.
Context Window
400K
tokens
Max Output
128K
tokens
Released
Aug 7, 2025
Arena Rank
—
Capabilities
👁Vision
🧠Reasoning
🔧Tool Calling
⚡Prompt Caching
🖥Computer Use
🎨Image Generation
Supported Parameters
Include Reasoning
Show reasoning tokens
Max Tokens
Output length limit
Reasoning
Extended thinking
Response Format
JSON mode / structured output
Seed
Deterministic outputs
structured_outputs
Tool Choice
Control tool usage
Tool Calling
Function calling support
Pricing Comparison
| Router | Input / 1M | Output / 1M | Cached Input / 1M |
|---|---|---|---|
| Requesty★ | $0.13 | $1.00 | $0.01 |
| OpenRouter | $0.25 | $2.00 | $0.02 |
| Vercel AI | $0.25 | $2.00 | — |
| Martian | $0.25 | $2.00 | $0.02 |
Model IDs
Requesty
openai/gpt-5-mini:flexOpenRouter
openai/gpt-5-miniTags
visionreasoningtool-callingcaching
Available Regions
EUUS