| Signal | Grok 4 Fast | Delta | Qwen3.5-35B-A3B |
|---|---|---|---|
Capabilities | 100 | +17 | |
Pricing | 1 | -1 | |
Context window size | 100 | +14 | |
Recency | 100 | -- | |
Output Capacity | 75 | -6 | |
| Overall Result | 2 wins | of 5 | 2 wins |
30
days ranked higher
0
days
0
days ranked higher
xAI
Alibaba
Grok 4 Fast saves you $36.25/month
That's $435.00/year compared to Qwen3.5-35B-A3B at your current usage level of 100K calls/month.
| Metric | Grok 4 Fast | Qwen3.5-35B-A3B | Winner |
|---|---|---|---|
| Overall Score | 96 | 87 | Grok 4 Fast |
| Rank | #6 | #42 | Grok 4 Fast |
| Quality Rank | #6 | #42 | Grok 4 Fast |
| Adoption Rank | #6 | #42 | Grok 4 Fast |
| Parameters | -- | 35B | -- |
| Context Window | 2000K | 262K | Grok 4 Fast |
| Pricing | $0.20/$0.50/M | $0.16/$1.30/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 83 | Grok 4 Fast |
| Pricing | 1 | 1 | Qwen3.5-35B-A3B |
| Context window size | 100 | 86 | Grok 4 Fast |
| Recency | 100 | 100 | Grok 4 Fast |
| Output Capacity | 75 | 80 | Qwen3.5-35B-A3B |
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 96/100 (rank #6), placing it in the top 98% of all 290 models tracked.
Scores 87/100 (rank #42), placing it in the top 86% of all 290 models tracked.
Grok 4 Fast has a 10-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.
Grok 4 Fast offers 52% better value per quality point. At 1M tokens/day, you'd spend $10.50/month with Grok 4 Fast vs $21.94/month with Qwen3.5-35B-A3B — a $11.44 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. Grok 4 Fast 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 ($0.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (96/100) 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 Fast has a moderate advantage with a 9.5-point lead in composite score. It wins on more signal dimensions, but Qwen3.5-35B-A3B has specific strengths that could make it the better choice for certain workflows.
Best for Quality
Grok 4 Fast
Marginally better benchmark scores; both are excellent
Best for Cost
Grok 4 Fast
52% lower pricing; better value at scale
Best for Reliability
Grok 4 Fast
Higher uptime and faster response speeds
Best for Prototyping
Grok 4 Fast
Stronger community support and better developer experience
Best for Production
Grok 4 Fast
Wider enterprise adoption and proven at scale
by xAI
| Capability | Grok 4 Fast | Qwen3.5-35B-A3B |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
xAI
Alibaba
Grok 4 Fast saves you $0.8925/month
That's 48% cheaper than Qwen3.5-35B-A3B 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 | Grok 4 Fast | Qwen3.5-35B-A3B |
|---|---|---|
| Context Window | 2M | 262K |
| Max Output Tokens | 30,000 | 65,536 |
| Open Source | No | Yes |
| Created | Sep 19, 2025 | Feb 25, 2026 |
Grok 4 Fast scores 96/100 (rank #6) compared to Qwen3.5-35B-A3B's 87/100 (rank #42), giving it a 10-point advantage. Grok 4 Fast is the stronger overall choice, though Qwen3.5-35B-A3B may excel in specific areas like certain benchmarks.
Grok 4 Fast is ranked #6 and Qwen3.5-35B-A3B is ranked #42 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.
Grok 4 Fast is cheaper at $0.50/M output tokens vs Qwen3.5-35B-A3B's $1.30/M output tokens — 2.6x more expensive. Input token pricing: Grok 4 Fast at $0.20/M vs Qwen3.5-35B-A3B at $0.16/M.
Grok 4 Fast has a larger context window of 2,000,000 tokens compared to Qwen3.5-35B-A3B's 262,144 tokens. A larger context window means the model can process longer documents and conversations.