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Claude 3.5 Sonnet vs ERNIE 5.5 Flash Preview

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 18.3. ERNIE 5.5 Flash Preview is 12.2x cheaper per token.

Anthropic · Baidu · Updated for 2026

Which is better?

ERNIE 5.5 Flash Preview leads the overall LLM Stats Score 52.3 to 18.3, ranking #13 overall.

On price, ERNIE 5.5 Flash Preview is roughly 12.2x 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 Claude 3.5 Sonnet

  • you want predictable pricing at $3.00/M input and $15.00/M output

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 12.2x 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

At a glance

The differences that matter most.

Claude 3.5 Sonnet
Anthropic
ERNIE 5.5 Flash Preview
Baidu
Core performance indexes
LLM Stats Score
18.3
#253
52.3
#13
Reasoning
19.3
#236
50.7
#12
Coding
11.1
#193
37.9
#20
Cost, coverage & limits
Benchmark wins
—
—
Input price
$3.00 / M
$0.28 / M
Output price
$15.00 / M
$1.13 / M
Context window
200,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude 3.5 Sonnet
ERNIE 5.5 Flash Preview
Tool use
8.0#175
32.2#8
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for Claude 3.5 Sonnet · 13 for ERNIE 5.5 Flash Preview

No common benchmarks found

Claude 3.5 Sonnet and ERNIE 5.5 Flash Previewdon'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, Claude 3.5 Sonnet ($3.00/1M tokens) is 10.7x more expensive than ERNIE 5.5 Flash Preview ($0.28/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 13.3x more expensive than ERNIE 5.5 Flash Preview ($1.13/1M tokens).

In conclusion, Claude 3.5 Sonnet 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
Anthropic
Claude 3.5 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Baidu
ERNIE 5.5 Flash Preview
Input tokens$0.28
Output tokens$1.13
Best providerBaidu
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 Claude 3.5 Sonnet's 200,000 tokens. ERNIE 5.5 Flash Preview can generate longer responses up to 1,048,576 tokens, while Claude 3.5 Sonnet is limited to 200,000 tokens.

Anthropic
Claude 3.5 Sonnet
Input200,000 tokens
Output200,000 tokens
Baidu
ERNIE 5.5 Flash Preview
Input1,048,576 tokens
Output1,048,576 tokens
Thu Nov 12 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude 3.5 Sonnet supports multimodal inputs, whereas ERNIE 5.5 Flash Preview 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

Text
Images
Audio
Video

ERNIE 5.5 Flash Preview

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude 3.5 Sonnet

Proprietary

Closed source

ERNIE 5.5 Flash Preview

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while ERNIE 5.5 Flash Preview was released on 2026-11-11.

ERNIE 5.5 Flash Preview is 25 months newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Oct 22, 2024

2.1 years ago

ERNIE 5.5 Flash Preview

Nov 11, 2026

1 days ago

2.1yr newer

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

Claude 3.5 Sonnet is available from Anthropic, Bedrock, Google. ERNIE 5.5 Flash Preview is available from Baidu Qianfan.

Claude 3.5 Sonnet

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

ERNIE 5.5 Flash Preview

baidu logo
Baidu
Input Price:Input: $0.28/1MOutput Price:Output: $1.13/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude 3.5 Sonnet and ERNIE 5.5 Flash Preview side-by-side, then vote on the output you prefer.

Claude 3.5 Sonnet
✓ Preferred
ERNIE 5.5 Flash Preview
Open in Playground

FAQ

Common questions about Claude 3.5 Sonnet vs ERNIE 5.5 Flash Preview.

Which is better, Claude 3.5 Sonnet or ERNIE 5.5 Flash Preview?

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 18.3. Claude 3.5 Sonnet is made by Anthropic and ERNIE 5.5 Flash Preview is made by Baidu. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude 3.5 Sonnet compare to ERNIE 5.5 Flash Preview in benchmarks?

Claude 3.5 Sonnet scores GSM8k: 96.4%, DocVQA: 95.2%, AI2D: 94.7%, HumanEval: 93.7%, BIG-Bench Hard: 93.1%. 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%.

Is Claude 3.5 Sonnet cheaper than ERNIE 5.5 Flash Preview?

ERNIE 5.5 Flash Preview is 10.7x cheaper for input tokens. Claude 3.5 Sonnet costs $3.00/M input and $15.00/M output via anthropic. ERNIE 5.5 Flash Preview costs $0.28/M input and $1.13/M output via baidu.

What are the context window sizes for Claude 3.5 Sonnet and ERNIE 5.5 Flash Preview?

Claude 3.5 Sonnet supports 200K tokens and ERNIE 5.5 Flash Preview supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3.5 Sonnet and ERNIE 5.5 Flash Preview?

Key differences include LLM Stats Score (18.3 vs 52.3), context window (200K vs 1.0M), input pricing ($3.00 vs $0.28/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3.5 Sonnet and ERNIE 5.5 Flash Preview?

Claude 3.5 Sonnet is developed by Anthropic and ERNIE 5.5 Flash Preview is developed by Baidu.

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