| Signal | Qwen3.5-Flash | Delta | Step 3.5 Flash (free) |
|---|---|---|---|
Capabilities | 83 | +33 | |
Benchmarks | 67 | +67 | |
Pricing | 0 | -30 | |
Context window size | 95 | +9 | |
Recency | 100 | -- | |
Output Capacity | 80 | -10 | |
| Overall Result | 3 wins | of 6 | 2 wins |
12
days ranked higher
4
days
14
days ranked higher
Alibaba
StepFun
Step 3.5 Flash (free) saves you $19.50/month
That's $234.00/year compared to Qwen3.5-Flash at your current usage level of 100K calls/month.
| Metric | Qwen3.5-Flash | Step 3.5 Flash (free) | Winner |
|---|---|---|---|
| Overall Score | 79 | 78 | Qwen3.5-Flash |
| Rank | #80 | #86 | Qwen3.5-Flash |
| Quality Rank | #80 | #86 | Qwen3.5-Flash |
| Adoption Rank | #80 | #86 | Qwen3.5-Flash |
| Parameters | -- | -- | -- |
| Context Window | 1000K | 256K | Qwen3.5-Flash |
| Pricing | $0.07/$0.26/M | Free | -- |
| Signal Scores | |||
| Capabilities | 83 | 50 | Qwen3.5-Flash |
| Benchmarks | 67 | -- | Qwen3.5-Flash |
| Pricing | 0 | 30 | Step 3.5 Flash (free) |
| Context window size | 95 | 86 | Qwen3.5-Flash |
| Recency | 100 | 100 | Qwen3.5-Flash |
| Output Capacity | 80 | 90 | Step 3.5 Flash (free) |
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 79/100 (rank #80), placing it in the top 73% of all 290 models tracked.
Scores 78/100 (rank #86), placing it in the top 71% of all 290 models tracked.
With only a 1-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
Both models are priced similarly, so the decision comes down to quality and features rather than cost.
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. Step 3.5 Flash (free) also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1000K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.00/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (79/100) 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
Qwen3.5-Flash and Step 3.5 Flash (free) are extremely close in overall performance (only 1.2000000000000028 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
Best for Quality
Qwen3.5-Flash
Marginally better benchmark scores; both are excellent
Best for Cost
Step 3.5 Flash (free)
100% lower pricing; better value at scale
Best for Reliability
Qwen3.5-Flash
Higher uptime and faster response speeds
Best for Prototyping
Qwen3.5-Flash
Stronger community support and better developer experience
Best for Production
Qwen3.5-Flash
Wider enterprise adoption and proven at scale
by Alibaba
| Capability | Qwen3.5-Flash | Step 3.5 Flash (free) |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Modediffers | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Alibaba
StepFun
Step 3.5 Flash (free) saves you $0.4290/month
That's 100% cheaper than Qwen3.5-Flash 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 | Qwen3.5-Flash | Step 3.5 Flash (free) |
|---|---|---|
| Context Window | 1M | 256K |
| Max Output Tokens | 65,536 | 256,000 |
| Open Source | No | Yes |
| Created | Feb 25, 2026 | Jan 29, 2026 |
Qwen3.5-Flash scores 79/100 (rank #80) compared to Step 3.5 Flash (free)'s 78/100 (rank #86), giving it a 1-point advantage. Qwen3.5-Flash is the stronger overall choice, though Step 3.5 Flash (free) may excel in specific areas like cost efficiency.
Qwen3.5-Flash is ranked #80 and Step 3.5 Flash (free) is ranked #86 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.
Step 3.5 Flash (free) is cheaper at $0.00/M output tokens vs Qwen3.5-Flash's $0.26/M output tokens - 260.0x more expensive. Input token pricing: Qwen3.5-Flash at $0.07/M vs Step 3.5 Flash (free) at $0.00/M.
Qwen3.5-Flash has a larger context window of 1,000,000 tokens compared to Step 3.5 Flash (free)'s 256,000 tokens. A larger context window means the model can process longer documents and conversations.