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ERNIE 5.5 Flash Preview vs Llama 3.1 405B Instruct

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 14.2. ERNIE 5.5 Flash Preview is 1.8x cheaper per token.

Baidu · Meta · Updated for 2026

Which is better?

ERNIE 5.5 Flash Preview leads the overall LLM Stats Score 52.3 to 14.2, ranking #13 overall.

On price, ERNIE 5.5 Flash Preview is roughly 1.8x 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 1.8x 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 Llama 3.1 405B Instruct

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

ERNIE 5.5 Flash Preview
Baidu
Llama 3.1 405B Instruct
Meta
Core performance indexes
LLM Stats Score
52.3
#13
14.2
#279
Reasoning
50.7
#12
13.3
#278
Coding
37.9
#20
11.3
#192
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.28 / M
$0.89 / M
Output price
$1.13 / M
$0.89 / M
Context window
1,048,576
128,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
ERNIE 5.5 Flash Preview
Llama 3.1 405B Instruct
Tool use
32.2#8
30.8#12
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for ERNIE 5.5 Flash Preview · 18 for Llama 3.1 405B Instruct

No common benchmarks found

ERNIE 5.5 Flash Preview and Llama 3.1 405B Instructdon'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 3.2x cheaper than Llama 3.1 405B Instruct ($0.89/1M tokens).

For output processing, ERNIE 5.5 Flash Preview ($1.13/1M tokens) is 1.3x more expensive than Llama 3.1 405B Instruct ($0.89/1M tokens).

In conclusion, Llama 3.1 405B Instruct 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
Fri Nov 13 2026 • llm-stats.com
Baidu
ERNIE 5.5 Flash Preview
Input tokens$0.28
Output tokens$1.13
Best providerBaidu
Meta
Llama 3.1 405B Instruct
Input tokens$0.89
Output tokens$0.89
Best providerLambda
Notice missing or incorrect data?

Model Size

Parameter count comparison

125.0B diff

Llama 3.1 405B Instruct has 125.0B more parameters than ERNIE 5.5 Flash Preview, making it 44.6% larger.

Baidu
ERNIE 5.5 Flash Preview
280.0Bparameters
Meta
Llama 3.1 405B Instruct
405.0Bparameters
280.0B
ERNIE 5.5 Flash Preview
405.0B
Llama 3.1 405B Instruct

Context Window

Maximum input and output token capacity

ERNIE 5.5 Flash Preview accepts 1,048,576 input tokens compared to Llama 3.1 405B Instruct's 128,000 tokens. ERNIE 5.5 Flash Preview can generate longer responses up to 1,048,576 tokens, while Llama 3.1 405B Instruct is limited to 128,000 tokens.

Baidu
ERNIE 5.5 Flash Preview
Input1,048,576 tokens
Output1,048,576 tokens
Meta
Llama 3.1 405B Instruct
Input128,000 tokens
Output128,000 tokens
Fri Nov 13 2026 • llm-stats.com

License

Usage and distribution terms

ERNIE 5.5 Flash Preview is licensed under a proprietary license, while Llama 3.1 405B Instruct uses Llama 3.1 Community License.

License differences may affect how you can use these models in commercial or open-source projects.

ERNIE 5.5 Flash Preview

Proprietary

Closed source

Llama 3.1 405B Instruct

Llama 3.1 Community License

Open weights

Release Timeline

When each model was launched

ERNIE 5.5 Flash Preview was released on 2026-11-11, while Llama 3.1 405B Instruct was released on 2024-07-23.

ERNIE 5.5 Flash Preview is 28 months newer than Llama 3.1 405B Instruct.

ERNIE 5.5 Flash Preview

Nov 11, 2026

1 days ago

2.3yr newer
Llama 3.1 405B Instruct

Jul 23, 2024

2.3 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. Llama 3.1 405B Instruct is available from Lambda, DeepInfra, Fireworks, Bedrock, Together, Hyperbolic, Google, Replicate.

ERNIE 5.5 Flash Preview

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

Llama 3.1 405B Instruct

lambda logo
Lambda
Input Price:Input: $0.89/1MOutput Price:Output: $0.89/1M
deepinfra logo
Deepinfra
Input Price:Input: $1.79/1MOutput Price:Output: $1.79/1M
fireworks logo
Fireworks
Input Price:Input: $3.00/1MOutput Price:Output: $3.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $3.00/1M
together logo
Together
Input Price:Input: $3.50/1MOutput Price:Output: $3.50/1M
hyperbolic logo
Hyperbolic
Input Price:Input: $4.00/1MOutput Price:Output: $4.00/1M
google logo
Google
Input Price:Input: $5.00/1MOutput Price:Output: $16.00/1M
replicate logo
Replicate
Input Price:Input: $9.50/1MOutput Price:Output: $9.50/1M
* 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 Llama 3.1 405B Instruct side-by-side, then vote on the output you prefer.

ERNIE 5.5 Flash Preview
✓ Preferred
Llama 3.1 405B Instruct
Open in Playground

FAQ

Common questions about ERNIE 5.5 Flash Preview vs Llama 3.1 405B Instruct.

Which is better, ERNIE 5.5 Flash Preview or Llama 3.1 405B Instruct?

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 14.2. ERNIE 5.5 Flash Preview is made by Baidu and Llama 3.1 405B Instruct is made by Meta. 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 Llama 3.1 405B Instruct 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%. Llama 3.1 405B Instruct scores ARC-C: 96.9%, GSM8k: 96.8%, API-Bank: 92.0%, Multilingual MGSM (CoT): 91.6%, HumanEval: 89.0%.

Is ERNIE 5.5 Flash Preview cheaper than Llama 3.1 405B Instruct?

ERNIE 5.5 Flash Preview is 3.2x cheaper for input tokens. ERNIE 5.5 Flash Preview costs $0.28/M input and $1.13/M output via baidu. Llama 3.1 405B Instruct costs $0.89/M input and $0.89/M output via lambda.

What are the context window sizes for ERNIE 5.5 Flash Preview and Llama 3.1 405B Instruct?

ERNIE 5.5 Flash Preview supports 1.0M tokens and Llama 3.1 405B Instruct supports 128K 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 Llama 3.1 405B Instruct?

Key differences include LLM Stats Score (52.3 vs 14.2), context window (1.0M vs 128K), input pricing ($0.28 vs $0.89/M), licensing (Proprietary vs Llama 3.1 Community License). See the full comparison above for benchmark-by-benchmark results.

Who makes ERNIE 5.5 Flash Preview and Llama 3.1 405B Instruct?

ERNIE 5.5 Flash Preview is developed by Baidu and Llama 3.1 405B Instruct is developed by Meta.

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