Compare · ModelsLive · 2 picked · head to head
Claude Opus 4.5 vs GPT-4o (2024-05-13)
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Opus 4.5 wins on 4/4 benchmarks
Claude Opus 4.5 wins 4 of 4 shared benchmarks. Leads in arena · knowledge · math.
Category leads
arena·Claude Opus 4.5knowledge·Claude Opus 4.5math·Claude Opus 4.5
Hype vs Reality
Attention vs performance
Claude Opus 4.5
#185 by perf·#9 by attention
GPT-4o (2024-05-13)
#117 by perf·no signal
Best value
GPT-4o (2024-05-13)
1.8x better value than Claude Opus 4.5
Claude Opus 4.5
2.8 pts/$
$15.00/M
GPT-4o (2024-05-13)
5.1 pts/$
$10.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
4 benchmarks · 2 models
Claude Opus 4.5GPT-4o (2024-05-13)
Chatbot Arena Elo · Overall
Claude Opus 4.5 leads by +1390.6
Claude Opus 4.5
1469.8
GPT-4o (2024-05-13)
79.2
Balrog
Claude Opus 4.5 leads by +11.2
Balrog · benchmarks AI agents on text-based adventure games, testing language understanding, strategic planning, and long-horizon reasoning.
Claude Opus 4.5
43.5
GPT-4o (2024-05-13)
32.3
GPQA diamond
Claude Opus 4.5 leads by +49.5
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Opus 4.5
81.4
GPT-4o (2024-05-13)
31.9
OTIS Mock AIME 2024-2025
Claude Opus 4.5 leads by +79.9
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Opus 4.5
86.1
GPT-4o (2024-05-13)
6.2
Full benchmark table
| Benchmark | Claude Opus 4.5 | GPT-4o (2024-05-13) |
|---|---|---|
Chatbot Arena Elo · Overall | 1469.8 | 79.2 |
Balrog Balrog · benchmarks AI agents on text-based adventure games, testing language understanding, strategic planning, and long-horizon reasoning. | 43.5 | 32.3 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 81.4 | 31.9 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 86.1 | 6.2 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $5.00 | $25.00 | 200K tokens (~100 books) | $100.00 | |
| $5.00 | $15.00 | 128K tokens (~64 books) | $75.00 |
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