Model Comparison

ERNIE 4.5 vs o1-preview

o1-preview shows notably better performance in the majority of benchmarks. ERNIE 4.5 is 20.2x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

ERNIE 4.5 outperforms in 1 benchmarks (GPQA), while o1-preview is better at 3 benchmarks (MATH, MMLU, SimpleQA).

o1-preview shows notably better performance in the majority of benchmarks.

Thu Apr 16 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

ERNIE 4.5 costs less

For input processing, ERNIE 4.5 ($0.40/1M tokens) is 37.5x cheaper than o1-preview ($15.00/1M tokens).

For output processing, ERNIE 4.5 ($4.00/1M tokens) is 15.0x cheaper than o1-preview ($60.00/1M tokens).

In conclusion, o1-preview is more expensive than ERNIE 4.5.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Apr 16 2026 • llm-stats.com
Baidu
ERNIE 4.5
Input tokens$0.40
Output tokens$4.00
Best providerNovita
OpenAI
o1-preview
Input tokens$15.00
Output tokens$60.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 128,000 tokens. ERNIE 4.5 can generate longer responses up to 65,536 tokens, while o1-preview is limited to 32,768 tokens.

Baidu
ERNIE 4.5
Input128,000 tokens
Output65,536 tokens
OpenAI
o1-preview
Input128,000 tokens
Output32,768 tokens
Thu Apr 16 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

ERNIE 4.5

Proprietary

Closed source

o1-preview

Proprietary

Closed source

Release Timeline

When each model was launched

ERNIE 4.5 was released on 2025-06-25, while o1-preview was released on 2024-09-12.

ERNIE 4.5 is 10 months newer than o1-preview.

ERNIE 4.5

Jun 25, 2025

9 months ago

9mo newer
o1-preview

Sep 12, 2024

1.6 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

ERNIE 4.5 is available from Novita. o1-preview is available from OpenAI, Azure.

ERNIE 4.5

novita logo
Novita
Input Price:Input: $0.40/1MOutput Price:Output: $4.00/1M

o1-preview

openai logo
OpenAI
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M
azure logo
Azure
Input Price:Input: $16.50/1MOutput Price:Output: $66.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Baidu
Less expensive input tokens
Less expensive output tokens
Higher GPQA score (74.0% vs 73.3%)
OpenAI
Higher MATH score (85.5% vs 12.4%)
Higher MMLU score (90.8% vs 41.9%)
Higher SimpleQA score (42.4% vs 1.8%)

Detailed Comparison

AI Model Comparison Table
Feature
Baidu
ERNIE 4.5
OpenAI
o1-preview

FAQ

Common questions about ERNIE 4.5 vs o1-preview

o1-preview shows notably better performance in the majority of benchmarks. ERNIE 4.5 is made by Baidu and o1-preview is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
ERNIE 4.5 scores GPQA: 74.0%, ARC-E: 60.7%, PIQA: 55.2%, Winogrande: 51.3%, CLUEWSC: 48.6%. o1-preview scores MGSM: 90.8%, MMLU: 90.8%, MATH: 85.5%, GPQA: 73.3%, LiveBench: 52.3%.
ERNIE 4.5 is 37.5x cheaper for input tokens. ERNIE 4.5 costs $0.40/M input and $4.00/M output via novita. o1-preview costs $15.00/M input and $60.00/M output via openai.
ERNIE 4.5 supports 128K tokens and o1-preview supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include input pricing ($0.40 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.
ERNIE 4.5 is developed by Baidu and o1-preview is developed by OpenAI.