Compare · ModelsLive · 2 picked · head to head
Claude Opus 4.8 vs GPT-5.4
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Opus 4.8 wins on 9/15 benchmarks
Claude Opus 4.8 wins 9 of 15 shared benchmarks. Leads in agentic · arena · math.
Category leads
agentic·Claude Opus 4.8reasoning·GPT-5.4arena·Claude Opus 4.8knowledge·GPT-5.4math·Claude Opus 4.8coding·Claude Opus 4.8
Hype vs Reality
Attention vs performance
Claude Opus 4.8
#47 by perf·no signal
GPT-5.4
#61 by perf·no signal
Best value
GPT-5.4
1.6x better value than Claude Opus 4.8
Claude Opus 4.8
4.1 pts/$
$15.00/M
GPT-5.4
6.7 pts/$
$8.75/M
Vendor risk
Who is behind the model
Anthropic
$380.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
15 benchmarks · 2 models
Claude Opus 4.8GPT-5.4
APEX-Agents
Claude Opus 4.8 leads by +6.6
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Claude Opus 4.8
42.5
GPT-5.4
35.9
ARC-AGI
GPT-5.4 leads by +1.2
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Claude Opus 4.8
92.5
GPT-5.4
93.7
ARC-AGI-2
GPT-5.4 leads by +1.9
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 4.8
72.1
GPT-5.4
74.0
Chatbot Arena Elo · Coding
Claude Opus 4.8 leads by +131.1
Claude Opus 4.8
1542.3
GPT-5.4
1411.1
Chatbot Arena Elo · Overall
Claude Opus 4.8 leads by +10.1
Claude Opus 4.8
1477.8
GPT-5.4
1467.7
Chess Puzzles
GPT-5.4 leads by +10.0
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Claude Opus 4.8
34.0
GPT-5.4
44.0
FrontierMath-2025-02-28-Private
GPT-5.4 leads by +0.4
FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning.
Claude Opus 4.8
47.2
GPT-5.4
47.6
FrontierMath-Tier-4-2025-07-01-Private
Claude Opus 4.8 leads by +4.1
FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning.
Claude Opus 4.8
31.3
GPT-5.4
27.1
FrontierMath-Tier-4-v2-Private
Claude Opus 4.8 leads by +7.1
Claude Opus 4.8
56.1
GPT-5.4
49.0
FrontierMath-Tiers-1-3-v2-Private
Claude Opus 4.8 leads by +1.4
Claude Opus 4.8
80.0
GPT-5.4
78.6
GPQA diamond
GPT-5.4 leads by +3.0
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Opus 4.8
88.0
GPT-5.4
91.1
OTIS Mock AIME 2024-2025
Claude Opus 4.8 leads by +3.0
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Opus 4.8
98.3
GPT-5.4
95.3
PostTrainBench
Claude Opus 4.8 leads by +17.0
Claude Opus 4.8
37.2
GPT-5.4
20.2
SimpleQA Verified
GPT-5.4 leads by +5.3
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Opus 4.8
39.5
GPT-5.4
44.8
WeirdML
Claude Opus 4.8 leads by +5.2
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
Claude Opus 4.8
82.9
GPT-5.4
77.7
Full benchmark table
| Benchmark | Claude Opus 4.8 | GPT-5.4 |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 42.5 | 35.9 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 92.5 | 93.7 |
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. | 72.1 | 74.0 |
Chatbot Arena Elo · Coding | 1542.3 | 1411.1 |
Chatbot Arena Elo · Overall | 1477.8 | 1467.7 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 34.0 | 44.0 |
FrontierMath-2025-02-28-Private FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning. | 47.2 | 47.6 |
FrontierMath-Tier-4-2025-07-01-Private FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning. | 31.3 | 27.1 |
FrontierMath-Tier-4-v2-Private | 56.1 | 49.0 |
FrontierMath-Tiers-1-3-v2-Private | 80.0 | 78.6 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 88.0 | 91.1 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 98.3 | 95.3 |
PostTrainBench | 37.2 | 20.2 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 39.5 | 44.8 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 82.9 | 77.7 |
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 | |
| $2.50 | $15.00 | 1.1M tokens (~525 books) | $56.25 |