Anthropic
Claude Opus 5.5 (Medium)
Claude Opus 5.5 running at medium reasoning effort.
Intelligence
79.5 #22
Top 3% tier
Output Speed
82 t/s
TTFT 330 ms · ITL 12.2 ms/tok
Blended price (3:1)
$10 /1M
In $5/M · Out $25/M
Context
1.0M
≈ 2,500 A4 pages · max out 32,768
Quality Domain Radar
6-Axis Frontier Evaluation vs Category Average & Flagship
Claude Opus 5.5 (Medium)
Claude Mythos Preview (#1)
Average (68)
Radar axes are approximated from category scores where direct benchmark measurements are missing — see Methodology.
API deployment
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Benchmark Results
Model Details
Release date
Sep 5, 2026
Parameters
Not disclosed
License
Proprietary
Context Window
1,000,000 tokens
Input Price
$5/M
Output Price
$25/M
Output Speed
82 t/s
Time to First Token
330 ms
Estimated monthly bill
Estimated monthly spend
$0.00
Calculating savings vs GPT-4o...
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@misc{llmpodium2026claudeopus55medium,
title = {Benchmark Analysis and Intelligence Evaluation of Claude Opus 5.5 (Medium)},
author = {LLMPodium Research},
year = {2026},
url = {https://llmpodium.com/models/claude-opus-5-5-medium}
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