Qwen3.5 Plus 2026-04-20 is $1.7 cheaper per 1M input tokens (85% lower; 6.67x difference).
API cost decision in 10 seconds
NewQwen3.8 2.4T A95B vs Qwen3.5 Plus 2026-04-20
Pick Qwen3.5 Plus 2026-04-20 for lower cost; pick Qwen3.8 2.4T A95B only if the larger context window matters more.
Page updated:
Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Qwen3.5 Plus 2026-04-20 for lower cost; pick Qwen3.8 2.4T A95B only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Qwen3.5 Plus 2026-04-20 is estimated at $1.2 vs $5 for Qwen3.8 2.4T A95B, saving $3.8 (76% lower).
Cost-first pickQwen3.5 Plus 2026-04-20
Context-first pickQwen3.8 2.4T A95B
Sample savings$3.876%
10x traffic gap$38
Qwen3.8 2.4T A95B has more context, but Qwen3.5 Plus 2026-04-20 saves $3.8 on the standard workload. At 10x that traffic, the same price gap is about $38. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Qwen3.5 Plus 2026-04-20 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Qwen3.8 2.4T A95B | Qwen3.5 Plus 2026-04-20 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Qwen3.5 Plus 2026-04-20 | $13 | $2.4 |
| Balanced workload | 1M input + 1M output | Qwen3.5 Plus 2026-04-20 | $8 | $2.1 |
| Output-heavy chatbot | 1M input + 5M output | Qwen3.5 Plus 2026-04-20 | $32 | $9.3 |
Qwen3.5 Plus 2026-04-20 is $4.2 cheaper per 1M output tokens (70% lower; 3.33x difference).
Qwen3.8 2.4T A95B has 48.58K more context (1.05x larger).
Qwen3.5 Plus 2026-04-20 is $3.8 cheaper on the standard workload (76% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Qwen3.5 Plus 2026-04-20 has the lower input price; Qwen3.5 Plus 2026-04-20 has the lower output price; Qwen3.8 2.4T A95B offers the larger context window. For the 1M input plus 500K output sample, Qwen3.5 Plus 2026-04-20 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $5 for Qwen3.8 2.4T A95B and $1.2 for Qwen3.5 Plus 2026-04-20.
Choose Qwen3.8 2.4T A95B when you care most about larger context window.
Choose Qwen3.5 Plus 2026-04-20 when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Qwen3.5 Plus 2026-04-20 is estimated at $1.2 vs $5 for Qwen3.8 2.4T A95B, saving $3.8 (76% lower).
- Qwen3.5 Plus 2026-04-20 is $3.8 cheaper on the standard workload (76% lower).
- Qwen3.5 Plus 2026-04-20 is $1.7 cheaper per 1M input tokens (85% lower; 6.67x difference).
- Qwen3.5 Plus 2026-04-20 is $4.2 cheaper per 1M output tokens (70% lower; 3.33x difference).
- Qwen3.8 2.4T A95B has 48.58K more context (1.05x larger).
| Feature | NewQwen3.8 2.4T A95B (Qwen) | Qwen3.5 Plus 2026-04-20 (Qwen) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $0.3 |
| Completion Price per 1M tokens | $6 | $1.8 |
| Sample Workload Cost 1M input + 500K output | $5 | $1.2 |
| Context Window | 1.05M | 1M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Qwen3.5 Plus 2026-04-20 | On the standard 1M input plus 500K output workload, Qwen3.5 Plus 2026-04-20 is estimated at $1.2 vs $5 for Qwen3.8 2.4T A95B, saving $3.8 (76% lower). |
| High-volume input processing | Qwen3.5 Plus 2026-04-20 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Qwen3.5 Plus 2026-04-20 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Qwen3.8 2.4T A95B | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Qwen3 Next 80B A3B Instruct (free) can replace Qwen3.8 2.4T A95B when lower sample workload cost matters most: $0.
- Qwen3 Coder 480B A35B (free) can replace Qwen3.8 2.4T A95B when lower sample workload cost matters most: $0.
- Qwen3.7 Flash can replace Qwen3.8 2.4T A95B when lower sample workload cost matters most: $0.1.
- Qwen3 30B A3B Instruct 2507 can replace Qwen3.8 2.4T A95B when lower sample workload cost matters most: $0.14.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
- DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.
- DeepSeek V4 Flash 0731 · DeepSeek · #1
- MiMo-V2.5 · Xiaomi · #2
- Hy3 · Tencent · #3
- Ox Alpha · stealth · #4
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsQwen catalog
Review all tracked Qwen models before deciding whether this matchup is the right shortlist.
Open Qwen modelsQwen3.8 2.4T A95B is an open-weight sparse mixture-of-experts model from Qwen and the open-weight variant of [Qwen3.8 Max](/qwen/qwen3.8-max), with 95 billion active parameters out of 2.4 trillion total. It is...
Qwen3.5 Plus (April 2026) is a large-scale multimodal language model from Alibaba. It accepts text, image, and video input and produces text output, with a 1M token context window. This...