lmprices

OpenAIo3 API pricing

o3 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens on OpenAI's API, since .

Current price

Rates in effect since (price change). Every price links to its source.

Input
$2.00
Output
$8.00
Blended 3:1
$3.50
o3 current rates per 1M tokens
RatePer 1M tokens
Standard
Input$2.00
Cached input$0.50
Output$8.00
Batch
Input$1.00
Output$4.00

Launch price

o3 launched at this price on .

Input
$10.00
Output
$40.00
Blended 3:1
$17.50

Price history

InputOutput
$0$10$20$30$40Jul 2025Jan 2026Jul 2026 Input $10.00, from April 16, 2025Input $2.00, from June 10, 2025Output $40.00, from April 16, 2025Output $8.00, from June 10, 2025Output $8.00Input $2.00 $0$10$20$30$402026 Input $10.00, from April 16, 2025Input $2.00, from June 10, 2025Output $40.00, from April 16, 2025Output $8.00, from June 10, 2025Output $8.00Input $2.00
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. 1 price move. Documented since .

  1. Price change ·

    Rates from June 10, 2025
    RatePer 1M tokens
    Standard
    Input$2.00
    Cached input$0.50
    Output$8.00
    Batch
    Input$1.00
    Output$4.00

    80% cut. The 2025-06-08 capture of openai.com/api/pricing/ (20250608083612) still shows $10.00 / $2.50 / $40.00; the 2025-06-11 capture shows the new prices. The changelog dates the cut to 2025-06-10 but doesn't state the new numbers. Batch $1/$4 (added 2026-10-29): the changelog says the cut covered 'all API requests, including batch', the 2025-06-11 capture states the 50% Batch discount under o3, and the docs Batch table lists $1.00/$4.00 from 2025-12-11.

  2. Prices added ·

    Rates from April 16, 2025
    RatePer 1M tokens
    Standard
    Input$10.00
    Cached input$2.50
    Output$40.00
    Batch
    Input$5.00
    Output$20.00

    The launch-day capture (2025-04-17 00:34 UTC, still 2025-04-16 in Pacific time) lists o3 and o4-mini followed by 'Save 50% on inputs and outputs with the Batch API', so the batch rates are derived from that rule. No batch cached-input price is listed. $5/$20 applied until the 2025-06-10 cut.

    • Price: Archived page (openai.com, captured April 17, 2025)
      quote
      Reasoning models for complex, multi-step problems OpenAI o3 ... Price Input: $10.00 / 1M tokens Cached input: $2.50 / 1M tokens Output: $40.00 / 1M tokens OpenAI o4-mini ... Price Input: $1.100 / 1M tokens Cached input: $0.275 / 1M tokens Output: $4.400 / 1M tokens Save 50% on inputs and outputs with the Batch API and run tasks asynchronously over 24 hours.
    • Date: Changelog (developers.openai.com)
      quote
      April, 2025 / Apr 16: Added two new o-series reasoning models, o3 and o4-mini.
    • Date: Archived page (openai.com, captured April 17, 2025)
      quote
      Reasoning models for complex, multi-step problems OpenAI o3 ... Price Input: $10.00 / 1M tokens Cached input: $2.50 / 1M tokens Output: $40.00 / 1M tokens OpenAI o4-mini ... Price Input: $1.100 / 1M tokens Cached input: $0.275 / 1M tokens Output: $4.400 / 1M tokens Save 50% on inputs and outputs with the Batch API and run tasks asynchronously over 24 hours.

  3. Launch price ·

    Rates from April 16, 2025
    RatePer 1M tokens
    Input$10.00
    Cached input$2.50
    Output$40.00

    Price from the openai.com/api/pricing/ capture of 2025-04-17T00:34Z, which is still 2025-04-16 in US Pacific time (launch day).

Gaps in this history

None known.

API ids

Checked .