lmprices

OpenAIGPT-5 nano API pricing

GPT-5 nano costs $0.05 per 1M input tokens and $0.40 per 1M output tokens on OpenAI's API, since .

Current price

Rates in effect from a prices added first seen by . Every price links to its source.

Input
$0.05
Output
$0.40
Blended 3:1
$0.1375
GPT-5 nano current rates per 1M tokens
RatePer 1M tokens
Standard
Input$0.05
Cached input$0.005
Output$0.40
Batch
Input$0.025
Cached input$0.0025
Output$0.20

Launch price

GPT-5 nano launched at this price on .

Input
$0.05
Output
$0.40
Blended 3:1
$0.1375

Price history

InputOutput
$0$0.10$0.20$0.30$0.40Oct 2025Jan 2026Apr 2026Jul 2026Oct 2026 Input $0.05, from August 7, 2025Output $0.40, from August 7, 2025Output $0.40Input $0.05 $0$0.10$0.20$0.30$0.40Jan 2026Jul 2026 Input $0.05, from August 7, 2025Output $0.40, from August 7, 2025Output $0.40Input $0.05
Headline standard prices per 1M tokens. A filled circle marks a dated change; an open circle, a change first seen between two captures.

Every price event

3 verified events, newest first. No price moves. Documented since .

  1. Prices added · first seen by

    • Batch cached input added at $0.0025
    Rates from first seen by December 11, 2025
    RatePer 1M tokens
    Standard
    Input$0.05
    Cached input$0.005
    Output$0.40
    Batch
    Input$0.025
    Cached input$0.0025
    Output$0.20

    Batch cached input added: first seen in the platform docs Batch table of 2025-12-11 (earlier platform captures are client-rendered shells). The marketing page's 50% statement covers inputs and outputs only, so the start is unknown and no notBefore is set.

  2. Prices added ·

    Rates from August 7, 2025
    RatePer 1M tokens
    Standard
    Input$0.05
    Cached input$0.005
    Output$0.40
    Batch
    Input$0.025
    Output$0.20

    Batch from launch: the launch post names the Batch API among supported features, and the launch-day pricing capture says its prices are standard rates and 'Save 50% on inputs and outputs with the Batch API'. Batch input and output are derived from that rule; the docs Batch table lists the same figures from 2025-12-11.

  3. Launch price ·

    Rates from August 7, 2025
    RatePer 1M tokens
    Input$0.05
    Cached input$0.005
    Output$0.40

    Pricing-page capture from launch day (2025-08-07T17:38Z). Unchanged through the live page (2026-10-27).

Gaps in this history

Batch cached-input price first seen 2025-12-11; its start is unknown.

API ids

Checked .