Modeldex

OpenAI · Text line

GPT Nano

3 stages over 11 months, from GPT-4.1 nano in Apr 2025 to GPT-5.4 nano in Mar 2026.

Evolution chamber01 / 03
OpenAI

GPT-4.1 nano

CTX1.05M
Retired
41Quality
Vision · Tools
TextImageInput$0.10/M
TextOutput$0.40/M

Tiny GPT-4.1 option for classification, routing, and very high-volume tasks

PaidProprietary543/1044
Ready to evolve

Every generation. A new possibility.

GPT-4.1 nano · Apr 2025
View model : GPT-4.1 nano

3 stages, from GPT-4.1 nano (Apr 2025) to GPT-5.4 nano (Mar 2026). Press Evolve to watch each step.

How it grew

Context window

  1. 1.05Mv4.1
  2. 400Kv5
  3. 400Kv5.4

Max output

  1. 33Kv4.1
  2. 128Kv5
  3. 128Kv5.4

Output priceper 1M tokens, lower is better

  1. $0.40v4.1
  2. $0.40v5
  3. $1.25v5.4

Every stage

  1. v4.1 Stage 1

    OpenAI

    GPT-4.1 nano

    CTX1.05M
    Retired
    41Quality
    Vision · Tools
    TextImageInput$0.10/M
    TextOutput$0.40/M

    Tiny GPT-4.1 option for classification, routing, and very high-volume tasks

    PaidProprietary543/1044

  2. v5 Stage 2

    OpenAI

    GPT-5 Nano

    CTX400K
    55Quality
    Reasoning · Vision · Tools
    TextImageInput$0.05/M
    TextOutput$0.40/M

    Tiny GPT-5 lane for routing, extraction, classification, and bulk jobs

    PaidProprietary635/1044

  3. v5.4 Stage 3

    OpenAI

    GPT-5.4 nano

    CTX400K
    72Quality
    Reasoning · Vision · Tools
    TextImageInput$0.20/M
    TextOutput$1.25/M

    Cheapest GPT-5.4 lane for simple routing, extraction, and bulk automation

    PaidProprietary833/1044

More OpenAI lines

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