Claude 3.5 Sonnet vs o1
Claude 3.5 Sonnet and o1 are closely matched at 19.4 and 21.3 on the LLM Stats Score. Claude 3.5 Sonnet is 4.4x cheaper per token.
Anthropic · OpenAI · Updated for 2026
Which is better?
Claude 3.5 Sonnet and o1 are closely matched on the overall LLM Stats Score at 19.4 and 21.3.
In the 11 individual benchmarks reported for both models, o1 wins 8; this is a narrower head-to-head signal than the composite indexes.
On price, Claude 3.5 Sonnet is roughly 4.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude 3.5 Sonnet
- cost matters — it's about 4.4x cheaper per token
Choose o1
- you value its reported benchmark strengths — it wins 8 of 11 exact shared results
- you want the most recent training data — it shipped Dec 2024
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
19 reported for Claude 3.5 Sonnet · 19 for o1
Claude 3.5 Sonnet outperforms in 3 benchmarks (HumanEval, MGSM, SWE-Bench Verified), while o1 is better at 8 benchmarks (GPQA, GSM8k, MATH, MathVista, MMLU, MMMU, TAU-bench Airline, TAU-bench Retail).
o1 shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 5.0x cheaper than o1 ($15.00/1M tokens).
For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 4.0x cheaper than o1 ($60.00/1M tokens).
In conclusion, o1 is more expensive than Claude 3.5 Sonnet.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 200,000 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while o1 is limited to 100,000 tokens.
Input capabilities
Documented input modalities across available providers
Claude 3.5 Sonnet supports multimodal inputs, whereas o1 does not.
Claude 3.5 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude 3.5 Sonnet
o1
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 3.5 Sonnet was released on 2024-10-22, while o1 was released on 2024-12-17.
o1 is 2 months newer than Claude 3.5 Sonnet.
Oct 22, 2024
1.8 years ago
Dec 17, 2024
1.7 years ago
1mo 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 3.5 Sonnet is available from Anthropic, Bedrock, Google. o1 is available from Azure, OpenAI.
Claude 3.5 Sonnet
o1
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude 3.5 Sonnet and o1 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude 3.5 Sonnet vs o1.