Modeldex

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Claude Opus

6 stages over 10 months, from Claude Opus 4.5 in Nov 2025 to Claude Opus 5.5 in Sep 2026.

Evolution chamber01 / 06
Anthropic

Claude Opus 4.5

CTX200K
80Quality
Reasoning · Vision · Tools
TextImagePDFInput$5/M
TextOutput$25/M

Flagship Claude model for deep reasoning, coding, and long-horizon agents

PaidProprietary706/1040
Ready to evolve

Every generation. A new possibility.

Claude Opus 4.5 · Nov 2025
View model : Claude Opus 4.5

6 stages, from Claude Opus 4.5 (Nov 2025) to Claude Opus 5.5 (Sep 2026). Press Evolve to watch each step.

How it grew

Context window

  1. 200Kv4.5
  2. 1Mv4.6
  3. 1Mv4.7
  4. 1Mv4.8
  5. 1Mv5
  6. 1Mv5.5

Max output

  1. 64Kv4.5
  2. 128Kv4.6
  3. 128Kv4.7
  4. 128Kv4.8
  5. 128Kv5
  6. 128Kv5.5

Output priceper 1M tokens, lower is better

  1. $25.00v4.5
  2. $25.00v4.6
  3. $25.00v4.7
  4. $25.00v4.8
  5. $25.00v5
  6. $20.00v5.5

Every stage

  1. v4.5 Stage 1

    Anthropic

    Claude Opus 4.5

    CTX200K
    80Quality
    Reasoning · Vision · Tools
    TextImagePDFInput$5/M
    TextOutput$25/M

    Flagship Claude model for deep reasoning, coding, and long-horizon agents

    PaidProprietary706/1040

  2. v4.6 Stage 2

    Anthropic

    Claude Opus 4.6

    CTX1M
    88Quality
    Reasoning · Vision · Tools
    TextImagePDFInput$5/M
    TextOutput$25/M

    High-end Claude for difficult coding, planning, and slower expert reasoning

    PaidProprietary772/1040

  3. v4.7 Stage 3

    Anthropic

    Claude Opus 4.7

    CTX1M
    91Quality
    Reasoning · Vision · Tools
    TextImagePDFInput$5/M
    TextOutput$25/M

    Stronger Opus tier for advanced software work and high-stakes reasoning

    PaidProprietary864/1040

  4. v4.8 Stage 4

    Anthropic

    Claude Opus 4.8

    CTX1M
    95Quality
    Reasoning · Vision · Tools
    TextImagePDFInput$5/M
    TextOutput$25/M

    Top Claude Opus tier for the hardest reasoning, coding, and long-horizon agents

    PaidProprietary907/1040

  5. v5 Stage 5

    Anthropic

    Claude Opus 5

    CTX1M
    98Quality
    Reasoning · Vision · Tools
    TextImagePDFInput$5/M
    TextOutput$25/M

    Strongest Claude Opus model for coding, agents, and professional work

    PaidProprietary956/1040

  6. v5.5 Stage 6

    Anthropic

    Claude Opus 5.5

    CTX1M
    100Quality
    Reasoning · Vision · Tools
    TextImagePDFInput$4/M
    TextOutput$20/M

    Claude model for long-running agentic coding and knowledge work

    PaidProprietary1018/1040

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