Claude 4.1 Opus (Reasoning) vs. GPT-4o (March 2025, chatgpt-4o-latest)
Comparison between Claude 4.1 Opus (Reasoning) and GPT-4o (March 2025, chatgpt-4o-latest) across intelligence, price, speed, context window and more.
For details relating to our methodology, see our Methodology page.
| Intelligence | |||
|---|---|---|---|
| Intelligence Index | 23* | 9* | |
| Humanity's Last Exam | 12% | 4% | |
| CritPt | 0% | ||
| AA-LCR v1.1 | 76% | ||
| Cost | |||
| Price per 1M Tokens | $11.55 | ||
| Input Price per 1M Tokens | $15.00 | ||
| Output Price per 1M Tokens | $75.00 | ||
| Cache Hit Price per 1M Tokens | $1.50 | ||
| Token Use | |||
| Performance | |||
| Technical specifications | |||
| Context Window | 200k tokens~300 A4 pages of size 12 Arial font | 128k tokens~192 A4 pages of size 12 Arial font | |
| Release Date | August 2025 | March 2025 | |
| Knowledge Cutoff | March 2025 | October 2023 | |
| Reasoning | Yes | No | |
| Input modality | Supports: text and image | Supports: text and image | |
| Output modality | Supports: text | Supports: text | |
| Open Source (Weights) | No | No | |
* Estimated
Highlights
Speed
IntelligenceUpdated
Artificial Analysis Intelligence Index
Artificial Analysis Intelligence Index by Open Weights / Proprietary
Intelligence Evaluations
Agentic knowledge work, (Elo-500)/2000
Agentic real-world work tasks, (Elo-500)/2000
Agentic SaaS workflows
Agentic coding & terminal use
Coding
Reasoning & knowledge
Professional document reasoning, All-pass
Physics reasoning
Knowledge
1 - hallucination rate
Long context reasoning
Legal agentic work, criterion pass rate
Agentic business operations
Agentic scientific research workflows in a terminal
Quantitative analysis on spreadsheets & documents
Kubernetes incident root-cause analysis
Visual reasoning
Medical long context reasoning
Intelligence Index Comparisons
Intelligence Index vs. Cost per Intelligence Index Task
Cost per Task (USD, Log Scale)
Cost
Cost per Intelligence Index Task
Cost to Run Artificial Analysis Intelligence Index
Pricing: Cache Hit, Input, and Output
Context Window
Context Window
Frequently Asked Questions
Claude 4.1 Opus (Reasoning) is more intelligent. Claude 4.1 Opus (Reasoning) scores 23 (estimated), compared with GPT-4o (March 2025, chatgpt-4o-latest) at 9 (estimated) on the Artificial Analysis Intelligence Index.
Claude 4.1 Opus (Reasoning) has a larger context window. Claude 4.1 Opus (Reasoning) supports 200k tokens, compared with GPT-4o (March 2025, chatgpt-4o-latest) at 130k tokens.