OpenAI: GPT-5 Mini

OpenAI

openai/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....

Context

400K

Input /1M

$0.25

Output /1M

$2.00

Latency (TTFT)

1,571ms

Pricing

Per 1M tokens, in USD

Input$0.25

Output$2.00

Cache read$0.025

Specs

text inimage infile intext outModerated

TokenizerGPT

Max output tokens128,000

Supported parameters

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

Where it ranks on price

Against 157 routable models

Input$0.25

Cheaper than 70% of routable models

Output$2.00

Cheaper than 56% of routable models

Benchmarks

Intelligence17.4

Coding15.6

Agentic8.9

Composite scores (0–100) from Artificial Analysis, via OpenRouter's model catalog.

Call this model

Swap in your Mizan key — the request/response bodies are OpenAI chat-completion shaped.

cURL

curl https://api.app-mizan.com/v1/chat/completions \
  -H "Authorization: Bearer mizan_rt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5-mini",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'

Models

OpenAI: GPT-5 Mini

OpenAI

openai/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....

Context

400K

Input /1M

$0.25

Output /1M

$2.00

Latency (TTFT)

1,571ms

Pricing

Per 1M tokens, in USD

Input$0.25

Output$2.00

Cache read$0.025

Specs

text inimage infile intext outModerated

TokenizerGPT

Max output tokens128,000

Supported parameters

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

Where it ranks on price

Against 157 routable models

Input$0.25

Cheaper than 70% of routable models

Output$2.00

Cheaper than 56% of routable models

Benchmarks

Intelligence17.4

Coding15.6

Agentic8.9

Composite scores (0–100) from Artificial Analysis, via OpenRouter's model catalog.

Call this model

Swap in your Mizan key — the request/response bodies are OpenAI chat-completion shaped.

cURL

curl https://api.app-mizan.com/v1/chat/completions \
  -H "Authorization: Bearer mizan_rt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5-mini",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'