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ERNIE 5.5 Flash Preview vs SWE-2 Flash

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 43.8.

Baidu · Cognition · Updated for 2026

Which is better?

ERNIE 5.5 Flash Preview leads the overall LLM Stats Score 52.3 to 43.8, ranking #13 overall.

In the 2 individual benchmarks reported for both models, ERNIE 5.5 Flash Preview wins 2; this is a narrower head-to-head signal than the composite indexes.

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 agents — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results
  • you want the most recent training data — it shipped Nov 2026

Choose SWE-2 Flash

  • you are already invested in the Cognition ecosystem

At a glance

The differences that matter most.

ERNIE 5.5 Flash Preview
Baidu
SWE-2 Flash
Cognition
Core performance indexes
LLM Stats Score
52.3
#13
43.8
#58
Reasoning
50.7
#12
42.6
#61
Coding
37.9
#20
33.0
#44
Agents
38.5
#11
30.1
#50
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
$0.28 / M
— / M
Output price
$1.13 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
ERNIE 5.5 Flash Preview
SWE-2 Flash
Tool use
32.2#8
23.0#58
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for ERNIE 5.5 Flash Preview · 7 for SWE-2 Flash

2 shared

ERNIE 5.5 Flash Preview outperforms in 2 benchmarks (DeepSWE 1.1, Terminal-Bench 4.0), while SWE-2 Flash is better at 0 benchmarks.

ERNIE 5.5 Flash Preview significantly outperforms across most benchmarks.

Thu Nov 12 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

4.0B diff

ERNIE 5.5 Flash Preview has 4.0B more parameters than SWE-2 Flash, making it 1.4% larger.

Baidu
ERNIE 5.5 Flash Preview
280.0Bparameters
Cognition
SWE-2 Flash
276.0Bparameters
280.0B
ERNIE 5.5 Flash Preview
276.0B
SWE-2 Flash

Context Window

Maximum input and output token capacity

Only ERNIE 5.5 Flash Preview specifies input context (1,048,576 tokens). Only ERNIE 5.5 Flash Preview specifies output context (1,048,576 tokens).

Baidu
ERNIE 5.5 Flash Preview
Input1,048,576 tokens
Output1,048,576 tokens
Cognition
SWE-2 Flash
Input- tokens
Output- 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

SWE-2 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

ERNIE 5.5 Flash Preview was released on 2026-11-11, while SWE-2 Flash was released on 2026-11-04.

ERNIE 5.5 Flash Preview is 0 month newer than SWE-2 Flash.

ERNIE 5.5 Flash Preview

Nov 11, 2026

1 days ago

1w newer
SWE-2 Flash

Nov 4, 2026

1 weeks 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

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against ERNIE 5.5 Flash Preview and SWE-2 Flash side-by-side, then vote on the output you prefer.

ERNIE 5.5 Flash Preview
✓ Preferred
SWE-2 Flash
Open in Playground

FAQ

Common questions about ERNIE 5.5 Flash Preview vs SWE-2 Flash.

Which is better, ERNIE 5.5 Flash Preview or SWE-2 Flash?

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 43.8. ERNIE 5.5 Flash Preview is made by Baidu and SWE-2 Flash is made by Cognition. 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 SWE-2 Flash 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%. SWE-2 Flash scores Terminal-Bench 2.1: 89.2%, DeepSWE 1.1: 60.1%, SWE Atlas - Codebase QnA: 50.0%, FrontierCode 1.1: 45.5%, ExploitBench: 34.8%.

What are the context window sizes for ERNIE 5.5 Flash Preview and SWE-2 Flash?

ERNIE 5.5 Flash Preview supports 1.0M tokens and SWE-2 Flash supports an unknown number of 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 SWE-2 Flash?

Key differences include LLM Stats Score (52.3 vs 43.8). See the full comparison above for benchmark-by-benchmark results.

Who makes ERNIE 5.5 Flash Preview and SWE-2 Flash?

ERNIE 5.5 Flash Preview is developed by Baidu and SWE-2 Flash is developed by Cognition.

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