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ERNIE 5.5 Flash Preview vs o1

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 20.3. ERNIE 5.5 Flash Preview is 53.3x cheaper per token.

Baidu · OpenAI · Updated for 2026

Which is better?

ERNIE 5.5 Flash Preview leads the overall LLM Stats Score 52.3 to 20.3, ranking #13 overall.

On price, ERNIE 5.5 Flash Preview is roughly 53.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

ERNIE 5.5 Flash Preview also accepts a larger context window (1,048,576 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 ERNIE 5.5 Flash Preview

  • overall performance matters — it scores 52.3 and ranks #13 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • cost matters — it's about 53.3x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Nov 2026

Choose o1

  • you want predictable pricing at $15.00/M input and $60.00/M output

At a glance

The differences that matter most.

ERNIE 5.5 Flash Preview
Baidu
o1
OpenAI
Core performance indexes
LLM Stats Score
52.3
#13
20.3
#237
Reasoning
50.7
#12
20.6
#224
Coding
37.9
#20
4.0
#251
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.28 / M
$15.00 / M
Output price
$1.13 / M
$60.00 / M
Context window
1,048,576
200,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
ERNIE 5.5 Flash Preview
o1
Tool use
32.2#8
12.5#134
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for ERNIE 5.5 Flash Preview · 19 for o1

No common benchmarks found

ERNIE 5.5 Flash Preview and o1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

ERNIE 5.5 Flash Preview costs less

For input processing, ERNIE 5.5 Flash Preview ($0.28/1M tokens) is 53.6x cheaper than o1 ($15.00/1M tokens).

For output processing, ERNIE 5.5 Flash Preview ($1.13/1M tokens) is 53.1x cheaper than o1 ($60.00/1M tokens).

In conclusion, o1 is more expensive than ERNIE 5.5 Flash Preview.*

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

Lowest available price from all providers
Thu Nov 12 2026 • llm-stats.com
Baidu
ERNIE 5.5 Flash Preview
Input tokens$0.28
Output tokens$1.13
Best providerBaidu
OpenAI
o1
Input tokens$15.00
Output tokens$60.00
Best providerAzure
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

ERNIE 5.5 Flash Preview accepts 1,048,576 input tokens compared to o1's 200,000 tokens. ERNIE 5.5 Flash Preview can generate longer responses up to 1,048,576 tokens, while o1 is limited to 100,000 tokens.

Baidu
ERNIE 5.5 Flash Preview
Input1,048,576 tokens
Output1,048,576 tokens
OpenAI
o1
Input200,000 tokens
Output100,000 tokens
Thu Nov 12 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 5.5 Flash Preview

Proprietary

Closed source

o1

Proprietary

Closed source

Release Timeline

When each model was launched

ERNIE 5.5 Flash Preview was released on 2026-11-11, while o1 was released on 2024-12-17.

ERNIE 5.5 Flash Preview is 23 months newer than o1.

ERNIE 5.5 Flash Preview

Nov 11, 2026

1 days ago

1.9yr newer
o1

Dec 17, 2024

1.9 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 5.5 Flash Preview is available from Baidu Qianfan. o1 is available from Azure, OpenAI.

ERNIE 5.5 Flash Preview

baidu logo
Baidu
Input Price:Input: $0.28/1MOutput Price:Output: $1.13/1M

o1

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

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against ERNIE 5.5 Flash Preview and o1 side-by-side, then vote on the output you prefer.

ERNIE 5.5 Flash Preview
✓ Preferred
o1
Open in Playground

FAQ

Common questions about ERNIE 5.5 Flash Preview vs o1.

Which is better, ERNIE 5.5 Flash Preview or o1?

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 20.3. ERNIE 5.5 Flash Preview is made by Baidu and o1 is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does ERNIE 5.5 Flash Preview compare to o1 in benchmarks?

ERNIE 5.5 Flash Preview scores BrowseComp: 87.4%, DRACO: 84.9%, MCP Atlas: 84.6%, DeepSWE 1.1: 71.2%, OfficeQA Pro: 67.9%. o1 scores GSM8k: 97.1%, MATH: 96.4%, GPQA Physics: 92.8%, MMLU: 91.8%, MGSM: 89.3%.

Is ERNIE 5.5 Flash Preview cheaper than o1?

ERNIE 5.5 Flash Preview is 53.6x cheaper for input tokens. ERNIE 5.5 Flash Preview costs $0.28/M input and $1.13/M output via baidu. o1 costs $15.00/M input and $60.00/M output via azure.

What are the context window sizes for ERNIE 5.5 Flash Preview and o1?

ERNIE 5.5 Flash Preview supports 1.0M tokens and o1 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between ERNIE 5.5 Flash Preview and o1?

Key differences include LLM Stats Score (52.3 vs 20.3), context window (1.0M vs 200K), input pricing ($0.28 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes ERNIE 5.5 Flash Preview and o1?

ERNIE 5.5 Flash Preview is developed by Baidu and o1 is developed by OpenAI.

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