Price Per TokenPrice Per Token
Baidu
Baidu
vs
Stepfun-ai

ERNIE 4.5 21B A3B vs Step 3.5 Flash

A detailed comparison of pricing, benchmarks, and capabilities

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Key Takeaways

ERNIE 4.5 21B A3B wins:

  • Cheaper input tokens
  • Cheaper output tokens

Step 3.5 Flash wins:

  • Larger context window
  • Faster response time
  • Higher intelligence benchmark
  • Better at coding
  • Has reasoning mode
Price Advantage
ERNIE 4.5 21B A3B
Benchmark Advantage
Step 3.5 Flash
Context Window
Step 3.5 Flash
Speed
Step 3.5 Flash

Pricing Comparison

Benchmark Comparison

Context & Performance

Capabilities

Feature Comparison

FeatureERNIE 4.5 21B A3BStep 3.5 Flash
Vision (Image Input)
Tool/Function Calls
Reasoning Mode
Audio Input
Audio Output
PDF Input
Prompt Caching
Web Search

License & Release

PropertyERNIE 4.5 21B A3BStep 3.5 Flash
LicenseOpen SourceOpen Source
AuthorBaiduStepfun-ai
ReleasedAug 2025Jan 2026

ERNIE 4.5 21B A3B Modalities

Input
text
Output
text

Step 3.5 Flash Modalities

Input
text
Output
text

Related Comparisons

Compare ERNIE 4.5 21B A3B with:

Compare Step 3.5 Flash with:

Frequently Asked Questions

ERNIE 4.5 21B A3B has cheaper input pricing at $0.07/M tokens. ERNIE 4.5 21B A3B has cheaper output pricing at $0.28/M tokens.
Step 3.5 Flash scores higher on coding benchmarks with a score of 31.6, compared to ERNIE 4.5 21B A3B's score of N/A.
ERNIE 4.5 21B A3B has a 120,000 token context window, while Step 3.5 Flash has a 256,000 token context window.
ERNIE 4.5 21B A3B does not support vision. Step 3.5 Flash does not support vision.