Key Takeaways
ERNIE 4.5 21B A3B Thinking wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
- Has reasoning mode
ERNIE 4.5 300B A47B wins:
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
Price Advantage
ERNIE 4.5 21B A3B Thinking
Benchmark Advantage
ERNIE 4.5 300B A47B
Context Window
ERNIE 4.5 21B A3B Thinking
Speed
ERNIE 4.5 300B A47B
Pricing Comparison
Price Comparison
| Metric | ERNIE 4.5 21B A3B Thinking | ERNIE 4.5 300B A47B | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.07 | $0.28 | ERNIE 4.5 21B A3B Thinking |
| Output (per 1M tokens) | $0.28 | $1.10 | ERNIE 4.5 21B A3B Thinking |
Using a 3:1 input/output ratio, ERNIE 4.5 21B A3B Thinking is 75% cheaper overall.
ERNIE 4.5 21B A3B Thinking Providers
Novita $0.07 (Cheapest)
ERNIE 4.5 300B A47B Providers
SiliconFlow $0.28 (Cheapest)
Novita $0.28 (Cheapest)
Benchmark Comparison
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Benchmarks Compared
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ERNIE 4.5 21B A3B Thinking Wins
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ERNIE 4.5 300B A47B Wins
Benchmark Scores
| Benchmark | ERNIE 4.5 21B A3B Thinking | ERNIE 4.5 300B A47B | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | - | 14.9 | - |
Coding Index Code generation & understanding | - | 14.5 | - |
Math Index Mathematical reasoning | - | 41.3 | - |
MMLU Pro Academic knowledge | - | 77.6 | - |
GPQA Graduate-level science | - | 81.1 | - |
LiveCodeBench Competitive programming | - | 46.7 | - |
AIME Competition math | - | 49.3 | - |
ERNIE 4.5 300B A47B significantly outperforms in coding benchmarks.
Cost vs Quality
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Other models
Context & Performance
Context Window
ERNIE 4.5 21B A3B Thinking
131,072
tokens
Max output: 65,536 tokens
ERNIE 4.5 300B A47B
123,000
tokens
Max output: 12,000 tokens
ERNIE 4.5 21B A3B Thinking has a 6% larger context window.
Speed Performance
| Metric | ERNIE 4.5 21B A3B Thinking | ERNIE 4.5 300B A47B | Winner |
|---|---|---|---|
| Tokens/second | N/A | 20.6 tok/s | |
| Time to First Token | N/A | 1.94s |
Capabilities
Feature Comparison
| Feature | ERNIE 4.5 21B A3B Thinking | ERNIE 4.5 300B A47B |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | ERNIE 4.5 21B A3B Thinking | ERNIE 4.5 300B A47B |
|---|---|---|
| License | Open Source | Open Source |
| Author | Baidu | Baidu |
| Released | Oct 2025 | Jun 2025 |
ERNIE 4.5 21B A3B Thinking Modalities
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ERNIE 4.5 300B A47B Modalities
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