Compare · ModelsLive · 2 picked · head to head
Claude Sonnet 5.5 vs GPT-5.4
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Sonnet 5.5 wins on 9/10 benchmarks
Claude Sonnet 5.5 wins 9 of 10 shared benchmarks. Leads in agentic · math · general.
Category leads
speed·GPT-5.4agentic·Claude Sonnet 5.5math·Claude Sonnet 5.5general·Claude Sonnet 5.5knowledge·Claude Sonnet 5.5
Hype vs Reality
Attention vs performance
Claude Sonnet 5.5
#11 by perf·#10 by attention
GPT-5.4
#104 by perf·#4 by attention
Best value
Claude Sonnet 5.5
2.1x better value than GPT-5.4
Claude Sonnet 5.5
12.5 pts/$
$6.00/M
GPT-5.4
6.0 pts/$
$8.75/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
10 benchmarks · 2 models
Claude Sonnet 5.5GPT-5.4
Artificial Analysis · Quality Index
GPT-5.4 leads by +1.2
Claude Sonnet 5.5
56.0
GPT-5.4
57.2
APEX-Agents
Claude Sonnet 5.5 leads by +23.1
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Claude Sonnet 5.5
75.5
GPT-5.4
52.4
FrontierMath-Tier-4-v2-Private
Claude Sonnet 5.5 leads by +31.5
Claude Sonnet 5.5
80.5
GPT-5.4
49.0
FrontierMath-Tiers-1-3-v2-Private
Claude Sonnet 5.5 leads by +10.2
Claude Sonnet 5.5
88.8
GPT-5.4
78.6
Furniture Assembly
Claude Sonnet 5.5 leads by +53.6
Claude Sonnet 5.5
64.3
GPT-5.4
10.7
GPQA diamond
Claude Sonnet 5.5 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 Sonnet 5.5
94.1
GPT-5.4
91.1
Mystery Game Puzzles
Claude Sonnet 5.5 leads by +30.9
Claude Sonnet 5.5
61.5
GPT-5.4
30.6
OTIS Mock AIME 2024-2025
Claude Sonnet 5.5 leads by +2.2
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Sonnet 5.5
100.0
GPT-5.4
97.8
Proofbench
Claude Sonnet 5.5 leads by +44.0
Claude Sonnet 5.5
100.0
GPT-5.4
56.0
SimpleQA Verified
Claude Sonnet 5.5 leads by +1.4
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Sonnet 5.5
46.5
GPT-5.4
45.1
Full benchmark table
| Benchmark | Claude Sonnet 5.5 | GPT-5.4 |
|---|---|---|
Artificial Analysis · Quality Index | 56.0 | 57.2 |
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 75.5 | 52.4 |
FrontierMath-Tier-4-v2-Private | 80.5 | 49.0 |
FrontierMath-Tiers-1-3-v2-Private | 88.8 | 78.6 |
Furniture Assembly | 64.3 | 10.7 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 94.1 | 91.1 |
Mystery Game Puzzles | 61.5 | 30.6 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 100.0 | 97.8 |
Proofbench | 100.0 | 56.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 46.5 | 45.1 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $2.00 | $10.00 | 1.0M tokens (~500 books) | $40.00 | |
| $2.50 | $15.00 | 1.1M tokens (~525 books) | $56.25 |