MDL
Claude 4 Opus
Anthropic
Verified against Artificial Analysis · Jul 13, 2026
Capability
75
percentile index
Price /M
$15 / $75
in / out
Context
—
Avg score
58.7
11 benchmarks
AA Intelligence
31.0
index
Weights
Closed
Released
May 22, 2025
About
Claude 4 Opus is a proprietary model in the Claude family from Anthropic. Benchmarked on 11 evals, averaging 58.7.
Benchmark scores · 11
avg 58.7 — higher is betterThe research behind this model
all papers mentioning it →OmniOPD: Logit-Free On-Policy Distillation via Speculative Verification▲ 8 on HF · May 31, 2026A Two-Phase Stability Study of LLM Judges and Bar Council Examiners on Thai Bar-Exam Free-Form EssaysMay 25, 2026Enhancing Reliability in LLM-Based Secure Code GenerationMay 22, 2026Evaluating Commercial AI Chatbots as News IntermediariesMay 21, 2026STT-Arena: A More Realistic Environment for Tool-Using with Spatio-Temporal DynamicsMay 18, 2026
Mentions matched by name in title/abstract — from the arXiv + HF daily corpus.
Performance & price
Price in / out$15 / $75 per 1M
Blended price$30 / 1M
Math index73.3
Median across API providers, via Artificial Analysis. Blended = 3:1 input:output. For reasoning models, latency includes thinking time. Methodology →
History
full ledger →Capability over time
Append-only ledger — every observed change to this model's numbers.
API providers
Artificial Analysis$75/M