OpenAI: GPT-5 Nano (batch)

OpenAI

openai/gpt-5-nano

GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...

Context

400K

Input /1M

$0.025

Output /1M

$0.20

Latency (TTFT)

2,432ms

Pricing

Per 1M tokens, in USD

Input$0.025

Output$0.20

Cache read$0.0025

Specs

text inimage infile intext outModerated

TokenizerGPT

Max output tokens128,000

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

Where it ranks on price

Against 157 routable models

Input$0.025

Cheaper than 98% of routable models

Output$0.20

Cheaper than 94% of routable models

Benchmarks

No third-party benchmark data available for this model yet.

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-nano",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'

Models

OpenAI: GPT-5 Nano (batch)

OpenAI

openai/gpt-5-nano

GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...

Context

400K

Input /1M

$0.025

Output /1M

$0.20

Latency (TTFT)

2,432ms

Pricing

Per 1M tokens, in USD

Input$0.025

Output$0.20

Cache read$0.0025

Specs

text inimage infile intext outModerated

TokenizerGPT

Max output tokens128,000

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

Where it ranks on price

Against 157 routable models

Input$0.025

Cheaper than 98% of routable models

Output$0.20

Cheaper than 94% of routable models

Benchmarks

No third-party benchmark data available for this model yet.

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-nano",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'