Qwen3.5 Plus 2026-04-20 vs Step 5 Preview
| Signal | Qwen3.5 Plus 2026-04-20 | Delta | Step 5 Preview |
|---|---|---|---|
Capabilities | 83 | -- | |
Pricing | 98 | +1 | |
Context window size | 95 | -- | |
Recency | 100 | -- | |
Output Capacity | 77 | +0 | |
Benchmarks | 0 | -73 | |
| Overall Result | 2 wins | of 6 | 1 wins |
Score History
74.8
current score
Qwen3.5 Plus 2026-04-20
right now
74.6
current score
Qwen3.5 Plus 2026-04-20
Alibaba
Step 5 Preview
StepFun
Qwen3.5 Plus 2026-04-20 saves you $115.00/month
That's $1380.00/year compared to Step 5 Preview at your current usage level of 100K calls/month.
| Metric | Qwen3.5 Plus 2026-04-20 | Step 5 Preview | Winner |
|---|---|---|---|
| Overall Score | 75 | 75 | Qwen3.5 Plus 2026-04-20 |
| Rank | #133 | #135 | Qwen3.5 Plus 2026-04-20 |
| Quality Rank | #133 | #135 | Qwen3.5 Plus 2026-04-20 |
| Adoption Rank | #133 | #135 | Qwen3.5 Plus 2026-04-20 |
| Parameters | -- | -- | -- |
| Context Window | 1000K | 1000K | -- |
| Pricing | $0.30/$1.80/M | $1.00/$2.70/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 83 | Qwen3.5 Plus 2026-04-20 |
| Pricing | 98 | 97 | Qwen3.5 Plus 2026-04-20 |
| Context window size | 95 | 95 | Qwen3.5 Plus 2026-04-20 |
| Recency | 100 | 100 | Qwen3.5 Plus 2026-04-20 |
| Output Capacity | 77 | 77 | Qwen3.5 Plus 2026-04-20 |
| Benchmarks | -- | 73 | Step 5 Preview |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 75/100 (rank #133), placing it in the top 54% of all 290 models tracked.
Scores 75/100 (rank #135), placing it in the top 54% of all 290 models tracked.
With only a 0-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.
Choose Qwen3.5 Plus 2026-04-20 when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
Choose Step 5 Preview when you need:
- Step-by-step reasoning and chain-of-thought problem solving
Qwen3.5 Plus 2026-04-20 offers 43% better value per quality point. At 1M tokens/day, you'd spend $31.50/month with Qwen3.5 Plus 2026-04-20 vs $55.50/month with Step 5 Preview - a $24.00 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
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Qwen3.5 Plus 2026-04-20 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 ($1.80/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (75/100) 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 Plus 2026-04-20 and Step 5 Preview are extremely close in overall performance (only 0.20000000000000284 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
By Use Case
Best for Quality
Qwen3.5 Plus 2026-04-20
Marginally better benchmark scores; both are excellent
Best for Cost
Qwen3.5 Plus 2026-04-20
43% lower pricing; better value at scale
Best for Reliability
Qwen3.5 Plus 2026-04-20
Higher uptime and faster response speeds
Best for Prototyping
Qwen3.5 Plus 2026-04-20
Stronger community support and better developer experience
Best for Production
Qwen3.5 Plus 2026-04-20
Wider enterprise adoption and proven at scale
by Alibaba
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 43% lower pricing; better value at scale
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | Qwen3.5 Plus 2026-04-20 | Step 5 Preview |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Qwen3.5 Plus 2026-04-20
Alibaba
Step 5 Preview
StepFun
Qwen3.5 Plus 2026-04-20 saves you $2.34/month
That's 46% cheaper than Step 5 Preview 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 Plus 2026-04-20 | Step 5 Preview |
|---|---|---|
| Context Window | 1M | 1M |
| Max Output Tokens | 65,536 | 64,000 |
| Open Source | No | No |
| Created | Apr 27, 2026 | Oct 8, 2026 |