Claude 3 Opus vs o1-preview
o1-preview leads the LLM Stats Score 17.0 to 10.4. o1-preview is 1.1x cheaper per token.
Anthropic · OpenAI · Updated for 2026
Which is better?
o1-preview leads the overall LLM Stats Score 17.0 to 10.4, ranking #199 overall.
In the 4 individual benchmarks reported for both models, o1-preview wins 4; this is a narrower head-to-head signal than the composite indexes.
On price, o1-preview is roughly 1.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude 3 Opus also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude 3 Opus
- you process long inputs — it offers a 200,000 token context window
Choose o1-preview
- overall performance matters — it scores 17.0 and ranks #199 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 4 of 4 exact shared results
- cost matters — it's about 1.1x cheaper per token
- you want the most recent training data — it shipped Sep 2024
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
11 reported for Claude 3 Opus · 8 for o1-preview
Claude 3 Opus outperforms in 0 benchmarks, while o1-preview is better at 4 benchmarks (GPQA, MATH, MGSM, MMLU).
o1-preview significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3 Opus ($15.00/1M tokens) costs the same as o1-preview ($15.00/1M tokens).
For output processing, Claude 3 Opus ($75.00/1M tokens) is 1.3x more expensive than o1-preview ($60.00/1M tokens).
In conclusion, Claude 3 Opus is more expensive than o1-preview.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude 3 Opus accepts 200,000 input tokens compared to o1-preview's 128,000 tokens. Claude 3 Opus can generate longer responses up to 200,000 tokens, while o1-preview is limited to 32,768 tokens.
Input capabilities
Documented input modalities across available providers
Claude 3 Opus supports multimodal inputs, whereas o1-preview does not.
Claude 3 Opus can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude 3 Opus
o1-preview
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude 3 Opus was released on 2024-02-29, while o1-preview was released on 2024-09-12.
o1-preview is 7 months newer than Claude 3 Opus.
Feb 29, 2024
2.5 years ago
Sep 12, 2024
2.0 years ago
6mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude 3 Opus is available from Anthropic, Bedrock, Google. o1-preview is available from OpenAI, Azure.
Claude 3 Opus
o1-preview
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude 3 Opus and o1-preview side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude 3 Opus vs o1-preview.