GPT 5 Nano

proprietary

Status: Deprecated

Intelligence
Reasoning
Speed
Context
400K
Max output
128K
Input price
$0.05/1M tokens
Output price
$0.4/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Model IDgpt-5-nano
Provider OpenCode Zen
Creator OpenAI
Familygpt-5
Licenseproprietary
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window400K tokens
Max input272K tokens
Max output128K tokens
Reasoning tokensYes
Knowledge cutoff
Release date
Deprecation date
Sourceofficial

Pricing

Input
$0.05
Output
$0.4
Cache write
—
Cache read
$0.01
Batch in
—
Batch out
—

Family Comparison: gpt-5

ModelContextMax outPricing
GPT 5 Nano400K128K$0.05$0.4
GPT 5 Codex400K128K$1.07$8.5
GPT 5400K128K$1.07$8.5

API

GET/v1/models/opencode/gpt-5-nano

GPT 5 Nano

gpt-5-nano

Status: Deprecated

Changes · 5 entries
gpt-5-nanoupdateca7a400Nov 2, 2026, 03:02 AM
pricinginput$0.05output$0.4cached input$0.005
gpt-5-nanoupdateb2a4f91May 8, 2026, 03:55 AM
pricinginput$0.05output$0.4cached input$0.005
gpt-5-nanoupdateb301ebeMar 23, 2026, 11:47 PM
modalitiesinput["text"]output["text"]
gpt-5-nanoupdate2b100acMar 23, 2026, 05:30 AM
model_typechat
gpt-5-nanocreate7f5c66fMar 21, 2026, 05:16 AM