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Claude Opus 5.5

State-of-the-Art Frontier Superintelligence
Official Source & Paper
Anthropic logo Anthropic 📄 Proprietary API 🌍 United States (US) 🗓️ Effective Date: 05.10.2026

Frontier ceiling model demonstrating unprecedented performance in novel theorem generation, multi-file software synthesis, and advanced multimodal cognition.

Model Size / Parameters Proprietary (>1T MoE) Architecture: State-of-the-Art Frontier Superintelligence
Context Window (Input) 1M tokens Token Capacity
Max Output Tokens 128k tokens Single Generation Limit
Supported Modalities Text, Code, Vision, Audio Native Multimodal Ingestion
License & Access Proprietary API Open Weights vs. API
Release Date October 2026 Effective Date: 05.10.2026

Verified Benchmark Results

Standardized academic and industry evaluation benchmarks (Effective Date: 05.10.2026).

MMLU-Pro / 5-Shot General Intellect
95.8%
SWE-bench Verified Software Engineering
75.6%
MATH 500 / AIME Mathematical Reasoning
98.2%
GPQA Diamond Doctoral Science
85.1%
HumanEval / Python Algorithm Synthesis
97.5%

Pricing & Cost Efficiency

Official API token pricing and self-hosted licensing terms.

Input Pricing (Prompt)
$14.00 / 1M tokens
Per 1 million processed tokens
Output Pricing (Generation)
$70.00 / 1M tokens
Per 1 million generated tokens
Verified Datasheet: Source: Anthropic Research Documentation • Effective Date: 05.10.2026
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