lmprices

OpenAIo4-mini API pricing

o4-mini was retired on . Its last price was $1.10 per 1M input tokens and $4.40 per 1M output tokens.

Last price

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

Input
$1.10
Output
$4.40
Blended 3:1
$1.925
o4-mini last rates per 1M tokens
RatePer 1M tokens
Standard
Input$1.10
Cached input$0.275
Output$4.40
Batch
Input$0.55
Output$2.20

Launch price

o4-mini launched at this price on .

Input
$1.10
Output
$4.40
Blended 3:1
$1.925

Price history

InputOutput
$0$2$4$6Jul 2025Jan 2026Jul 2026 Input $1.10, from April 16, 2025Output $4.40, from April 16, 2025Output $4.40Input $1.10 $0$2$4$62026 Input $1.10, from April 16, 2025Output $4.40, from April 16, 2025Output $4.40Input $1.10
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

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

  1. Prices added ·

    • Batch input added at $0.55
    • Batch output added at $2.20
    Rates from April 16, 2025
    RatePer 1M tokens
    Standard
    Input$1.10
    Cached input$0.275
    Output$4.40
    Batch
    Input$0.55
    Output$2.20

    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.

    • 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.
    • Price: Archived page (platform.openai.com, captured December 11, 2025)
      quote
      Batch Model Input Cached input Output ... o4-mini $0.55 - $2.20
    • Price: Pricing page (developers.openai.com)
      quote
      ### Batch pricing data ... | o4-mini | $0.55 | $2.20 | - |
    • 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.

  2. Launch price ·

    Rates from April 16, 2025
    RatePer 1M tokens
    Input$1.10
    Cached input$0.275
    Output$4.40

    Price from the openai.com/api/pricing/ capture of 2025-04-17T00:34Z (2025-04-16 US Pacific, launch day). Unchanged through the live page.

Gaps in this history

None known.

API ids

Checked .