Noometry

Model comparison

Claude Haiku 4.5 vs ERNIE 5.1

ERNIE 5.1 is the stronger model overall, scoring 43.8 to 39.5 on the Noometry Index.

Last verified . 18 shared benchmarks.

Claude Haiku 4.5 Anthropic

39.5

Rank #165 Confirmed

ERNIE 5.1 Baidu

43.8

Rank #83 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 1 category and ERNIE 5.1 in 7 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where ERNIE 5.1 leads 65.1 to 57.9.
  • The biggest single-benchmark swing is NYT Connections (extended): 14.3% for Claude Haiku 4.5 and 23.4% for ERNIE 5.1.

Side by side

Claude Haiku 4.5ERNIE 5.1
ProviderAnthropicBaidu
Noometry Index39.543.8
Released2025-10-15—
WeightsProprietaryProprietary
Context window200K—
Max output64K—
Input $ / M tokens$1—
Output $ / M tokens$5—
Results tracked5319

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Category by category

Coding Too close to call

Claude Haiku 4.5: 44.0 (#78), ERNIE 5.1: 44.0 (#76)

BenchmarkClaude Haiku 4.5ERNIE 5.1
LMArena Coding14531488
SWE-bench Verified (bash only)66.6%—
LMArena WebDev1330—
SWE-bench Multilingual64.7%—
SciCode43.3%—
WeirdML45.4%—
ALE-Bench653.48—

Agentic & Tool Use Not comparable

Claude Haiku 4.5: 33.6 (#52), ERNIE 5.1: —

BenchmarkClaude Haiku 4.5ERNIE 5.1
Terminal-Bench35.5%—
Berkeley Function Calling Leaderboard68.7%—
DeepResearch Bench45.5%—
BALROG31.2%—
ExploitBench13.7%—
LMArena Search—1227
Vending-Bench 2458.89—

Reasoning ERNIE 5.1 leads

Claude Haiku 4.5: 15.1 (#320), ERNIE 5.1: 21.9 (#211)

BenchmarkClaude Haiku 4.5ERNIE 5.1
NYT Connections (extended)14.3%23.4%
LMArena Hard Prompts14201481
ARC-AGI-24%—
ARC-AGI-147.7%—
CritPt0%—
Chess Puzzles8%—
DTBench73.6%—
LMCA30.9%—
Epoch Capabilities Index142.41—
ForecastBench61.4—

Math Claude Haiku 4.5 leads

Claude Haiku 4.5: 44.9 (#78), ERNIE 5.1: 40.3 (#92)

BenchmarkClaude Haiku 4.5ERNIE 5.1
LMArena Math13961481
OTIS Mock AIME 2024-202566.7%—
Omni-MATH56.1%—
MATH Level 596.4%—
FrontierMath (Feb 2025 set)5.9%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge ERNIE 5.1 leads

Claude Haiku 4.5: 37.7 (#153), ERNIE 5.1: 41.9 (#102)

BenchmarkClaude Haiku 4.5ERNIE 5.1
LMArena Expert14421492
GPQA Diamond71.2%—
SimpleQA Verified13.2%—
MMLU-Pro77.7%—
Vectara Hallucination Rate9.8%—
GPQA (HELM)60.5%—

Multimodal Not comparable

Claude Haiku 4.5: 26.8 (#118), ERNIE 5.1: —

BenchmarkClaude Haiku 4.5ERNIE 5.1
Blueprint-Bench 20%—
LMArena Document1420—

Multilingual ERNIE 5.1 leads

Claude Haiku 4.5: 49.9 (#129), ERNIE 5.1: 55.5 (#29)

BenchmarkClaude Haiku 4.5ERNIE 5.1
LMArena Non-English13771454
LMArena Chinese14171508
LMArena French14081488
LMArena German13751470
LMArena Japanese13391422
LMArena Korean13471427
LMArena Russian13811459
LMArena Spanish14201473

Instruction Following ERNIE 5.1 leads

Claude Haiku 4.5: 71.4 (#149), ERNIE 5.1: 76.7 (#37)

BenchmarkClaude Haiku 4.5ERNIE 5.1
LMArena Instruction Following14141460
IFEval80.1%—

Long Context ERNIE 5.1 leads

Claude Haiku 4.5: 43.6 (#92), ERNIE 5.1: 44.7 (#59)

BenchmarkClaude Haiku 4.5ERNIE 5.1
LMArena Longer Query14271462

Writing & Preference ERNIE 5.1 leads

Claude Haiku 4.5: 57.9 (#123), ERNIE 5.1: 65.1 (#52)

BenchmarkClaude Haiku 4.5ERNIE 5.1
LMArena Text13961468
LMArena Creative Writing13721441
LMArena Multi-Turn14091471
WildBench83.9%—
EQ-Bench 41064—

Frequently asked questions

Is Claude Haiku 4.5 better than ERNIE 5.1?

ERNIE 5.1 is the stronger model overall, scoring 43.8 to 39.5 on the Noometry Index.

Is Claude Haiku 4.5 or ERNIE 5.1 better for coding?

They score almost the same on coding (44.0 vs 44.0); test both on your own repository before choosing.

How many benchmarks do Claude Haiku 4.5 and ERNIE 5.1 share?

18 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and ERNIE 5.1 has 19.

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