| Signal | ERNIE 4.5 21B A3B Thinking | Delta | Grok 4.1 Fast |
|---|---|---|---|
Capabilities | 33 | -67 | |
Pricing | 0 | 0 | |
Context window size | 81 | -19 | |
Recency | 100 | -- | |
Output Capacity | 80 | +6 | |
Benchmarks | 0 | -76 | |
| Overall Result | 1 wins | of 6 | 4 wins |
0
days ranked higher
0
days
30
days ranked higher
Baidu
xAI
ERNIE 4.5 21B A3B Thinking saves you $24.00/month
That's $288.00/year compared to Grok 4.1 Fast at your current usage level of 100K calls/month.
| Metric | ERNIE 4.5 21B A3B Thinking | Grok 4.1 Fast | Winner |
|---|---|---|---|
| Overall Score | 70 | 87 | Grok 4.1 Fast |
| Rank | #154 | #16 | Grok 4.1 Fast |
| Quality Rank | #154 | #16 | Grok 4.1 Fast |
| Adoption Rank | #154 | #16 | Grok 4.1 Fast |
| Parameters | 21B | -- | -- |
| Context Window | 131K | 2000K | Grok 4.1 Fast |
| Pricing | $0.07/$0.28/M | $0.20/$0.50/M | -- |
| Signal Scores | |||
| Capabilities | 33 | 100 | Grok 4.1 Fast |
| Pricing | 0 | 1 | Grok 4.1 Fast |
| Context window size | 81 | 100 | Grok 4.1 Fast |
| Recency | 100 | 100 | ERNIE 4.5 21B A3B Thinking |
| Output Capacity | 80 | 75 | ERNIE 4.5 21B A3B Thinking |
| Benchmarks | -- | 76 | Grok 4.1 Fast |
Our composite score (0–100) combines six weighted signals: benchmark performance (25%), pricing efficiency (25%), context window size (15%), model recency (15%), output capacity (10%), and capability versatility (10%). Here's what the scores mean for these two models:
Scores 70/100 (rank #154), placing it in the top 47% of all 290 models tracked.
Scores 87/100 (rank #16), placing it in the top 95% of all 290 models tracked.
Grok 4.1 Fast has a 17-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
ERNIE 4.5 21B A3B Thinking offers 50% better value per quality point. At 1M tokens/day, you'd spend $5.25/month with ERNIE 4.5 21B A3B Thinking vs $10.50/month with Grok 4.1 Fast - a $5.25 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Higher benchmark score (0/100) indicates stronger performance on coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Faster response time (speed score 0/100) is critical for user-facing chat. ERNIE 4.5 21B A3B Thinking also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (2000K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.28/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (87/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Grok 4.1 Fast clearly outperforms ERNIE 4.5 21B A3B Thinking with a significant 16.900000000000006-point lead. For most general use cases, Grok 4.1 Fast is the stronger choice. However, ERNIE 4.5 21B A3B Thinking may still excel in niche scenarios.
Best for Quality
ERNIE 4.5 21B A3B Thinking
Marginally better benchmark scores; both are excellent
Best for Cost
ERNIE 4.5 21B A3B Thinking
50% lower pricing; better value at scale
Best for Reliability
ERNIE 4.5 21B A3B Thinking
Higher uptime and faster response speeds
Best for Prototyping
ERNIE 4.5 21B A3B Thinking
Stronger community support and better developer experience
Best for Production
ERNIE 4.5 21B A3B Thinking
Wider enterprise adoption and proven at scale
by Baidu
| Capability | ERNIE 4.5 21B A3B Thinking | Grok 4.1 Fast |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Callingdiffers | ||
| Streaming | ||
| JSON Modediffers | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
Baidu
xAI
ERNIE 4.5 21B A3B Thinking saves you $0.4980/month
That's 52% cheaper than Grok 4.1 Fast at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | ERNIE 4.5 21B A3B Thinking | Grok 4.1 Fast |
|---|---|---|
| Context Window | 131K | 2M |
| Max Output Tokens | 65,536 | 30,000 |
| Open Source | Yes | No |
| Created | Oct 9, 2025 | Nov 19, 2025 |
Grok 4.1 Fast scores 87/100 (rank #16) compared to ERNIE 4.5 21B A3B Thinking's 70/100 (rank #154), giving it a 17-point advantage. Grok 4.1 Fast is the stronger overall choice, though ERNIE 4.5 21B A3B Thinking may excel in specific areas like cost efficiency.
ERNIE 4.5 21B A3B Thinking is ranked #154 and Grok 4.1 Fast is ranked #16 out of 290+ AI models. Rankings use a composite score combining benchmark performance (25%), pricing (25%), context window (15%), recency (15%), output capacity (10%), and versatility (10%). Scores update hourly.
ERNIE 4.5 21B A3B Thinking is cheaper at $0.28/M output tokens vs Grok 4.1 Fast's $0.50/M output tokens - 1.8x more expensive. Input token pricing: ERNIE 4.5 21B A3B Thinking at $0.07/M vs Grok 4.1 Fast at $0.20/M.
Grok 4.1 Fast has a larger context window of 2,000,000 tokens compared to ERNIE 4.5 21B A3B Thinking's 131,072 tokens. A larger context window means the model can process longer documents and conversations.