Compare · ModelsLive · 2 picked · head to head
Claude Opus 5 vs Claude Opus 5.5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Opus 5.5 wins on 14/16 benchmarks
Claude Opus 5.5 wins 14 of 16 shared benchmarks. Leads in agentic · general · coding.
Category leads
agentic·Claude Opus 5.5reasoning·Claude Opus 5general·Claude Opus 5.5coding·Claude Opus 5.5math·Claude Opus 5.5knowledge·Claude Opus 5
Hype vs Reality
Attention vs performance
Claude Opus 5
#21 by perf·#6 by attention
Claude Opus 5.5
#3 by perf·#6 by attention
Best value
Claude Opus 5.5
1.5x better value than Claude Opus 5
Claude Opus 5
4.6 pts/$
$15.00/M
Claude Opus 5.5
6.9 pts/$
$12.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
Anthropic
$965.0B·Tier 1
Head to head
16 benchmarks · 2 models
Claude Opus 5Claude Opus 5.5
APEX-Agents
Claude Opus 5.5 leads by +7.7
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Claude Opus 5
65.8
Claude Opus 5.5
73.5
ARC-AGI
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Claude Opus 5
97.5
Claude Opus 5.5
97.5
ARC-AGI-2
Claude Opus 5.5 leads by +2.1
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
Claude Opus 5
90.4
Claude Opus 5.5
92.5
Dtbench
Claude Opus 5.5 leads by +1.8
Claude Opus 5
96.5
Claude Opus 5.5
98.2
Ebr Bench
Claude Opus 5.5 leads by +25.7
Claude Opus 5
45.7
Claude Opus 5.5
71.4
Frontiercode
Claude Opus 5.5 leads by +1.3
Claude Opus 5
53.4
Claude Opus 5.5
54.6
FrontierMath-Tier-4-v2-Private
Claude Opus 5.5 leads by +21.8
Claude Opus 5
73.2
Claude Opus 5.5
95.0
FrontierMath-Tiers-1-3-v2-Private
Claude Opus 5.5 leads by +5.6
Claude Opus 5
85.6
Claude Opus 5.5
91.2
Frontierswe
Claude Opus 5.5 leads by +10.3
Claude Opus 5
52.0
Claude Opus 5.5
62.3
Furniture Assembly
Claude Opus 5.5 leads by +32.1
Claude Opus 5
44.0
Claude Opus 5.5
76.2
GPQA diamond
Claude Opus 5 leads by +4.4
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Opus 5
91.8
Claude Opus 5.5
87.5
Lmca
Claude Opus 5.5 leads by +4.5
Claude Opus 5
75.8
Claude Opus 5.5
80.3
Mystery Game Puzzles
Claude Opus 5.5 leads by +13.2
Claude Opus 5
54.8
Claude Opus 5.5
68.0
OTIS Mock AIME 2024-2025
Claude Opus 5.5 leads by +1.1
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Opus 5
98.9
Claude Opus 5.5
100.0
Proofbench
Claude Opus 5.5 leads by +1.0
Claude Opus 5
99.0
Claude Opus 5.5
100.0
SimpleQA Verified
Claude Opus 5.5 leads by +12.3
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Opus 5
59.9
Claude Opus 5.5
72.2
Full benchmark table
| Benchmark | Claude Opus 5 | Claude Opus 5.5 |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 65.8 | 73.5 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 97.5 | 97.5 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 90.4 | 92.5 |
Dtbench | 96.5 | 98.2 |
Ebr Bench | 45.7 | 71.4 |
Frontiercode | 53.4 | 54.6 |
FrontierMath-Tier-4-v2-Private | 73.2 | 95.0 |
FrontierMath-Tiers-1-3-v2-Private | 85.6 | 91.2 |
Frontierswe | 52.0 | 62.3 |
Furniture Assembly | 44.0 | 76.2 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 91.8 | 87.5 |
Lmca | 75.8 | 80.3 |
Mystery Game Puzzles | 54.8 | 68.0 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 98.9 | 100.0 |
Proofbench | 99.0 | 100.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 59.9 | 72.2 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $5.00 | $25.00 | 1.0M tokens (~500 books) | $100.00 | |
| $4.00 | $20.00 | 1.0M tokens (~500 books) | $80.00 |
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