Step 3.7 Flash is $0.45 cheaper per 1M input tokens (69.2% lower; 3.25x difference).
API cost decision in 10 seconds
NewStep 3.7 Flash vs Qwen3 Coder Plus
Pick Step 3.7 Flash for lower cost; pick Qwen3 Coder Plus only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Step 3.7 Flash for lower cost; pick Qwen3 Coder Plus only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Step 3.7 Flash is estimated at $0.77 vs $2.27 for Qwen3 Coder Plus, saving $1.5 (65.9% lower).
Cost-first pickStep 3.7 Flash
Context-first pickQwen3 Coder Plus
Sample savings$1.565.9%
10x traffic gap$15
Qwen3 Coder Plus has more context, but Step 3.7 Flash saves $1.5 on the standard workload. At 10x that traffic, the same price gap is about $15. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Step 3.7 Flash stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Step 3.7 Flash | Qwen3 Coder Plus |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Step 3.7 Flash | $1.57 | $4.88 |
| Balanced workload | 1M input + 1M output | Step 3.7 Flash | $1.35 | $3.9 |
| Output-heavy chatbot | 1M input + 5M output | Step 3.7 Flash | $5.95 | $16.9 |
Step 3.7 Flash is $2.1 cheaper per 1M output tokens (64.6% lower; 2.83x difference).
Qwen3 Coder Plus has 744K more context (3.91x larger).
Step 3.7 Flash is $1.5 cheaper on the standard workload (65.9% 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
Step 3.7 Flash has the lower input price; Step 3.7 Flash has the lower output price; Qwen3 Coder Plus offers the larger context window. For the 1M input plus 500K output sample, Step 3.7 Flash is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.77 for Step 3.7 Flash and $2.27 for Qwen3 Coder Plus.
Choose Step 3.7 Flash when you care most about lower input-token price, and lower output-token price.
Choose Qwen3 Coder Plus when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Step 3.7 Flash is estimated at $0.77 vs $2.27 for Qwen3 Coder Plus, saving $1.5 (65.9% lower).
- Step 3.7 Flash is $1.5 cheaper on the standard workload (65.9% lower).
- Step 3.7 Flash is $0.45 cheaper per 1M input tokens (69.2% lower; 3.25x difference).
- Step 3.7 Flash is $2.1 cheaper per 1M output tokens (64.6% lower; 2.83x difference).
- Qwen3 Coder Plus has 744K more context (3.91x larger).
| Feature | NewStep 3.7 Flash (StepFun) | Qwen3 Coder Plus (Qwen) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.2 | $0.65 |
| Completion Price per 1M tokens | $1.15 | $3.25 |
| Sample Workload Cost 1M input + 500K output | $0.77 | $2.27 |
| Context Window | 256K | 1M |
| Release Date | ||
| Popularity | #101 | #147 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Step 3.7 Flash | On the standard 1M input plus 500K output workload, Step 3.7 Flash is estimated at $0.77 vs $2.27 for Qwen3 Coder Plus, saving $1.5 (65.9% lower). |
| High-volume input processing | Step 3.7 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Step 3.7 Flash | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Qwen3 Coder Plus | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Step 3.5 Flash can replace Step 3.7 Flash when lower sample workload cost matters most: $0.24.
- Qwen3 Next 80B A3B Instruct (free) can replace Qwen3 Coder Plus when lower sample workload cost matters most: $0.
- Qwen3 Coder 480B A35B (free) can replace Qwen3 Coder Plus when lower sample workload cost matters most: $0.
- Qwen2.5 7B Instruct can replace Qwen3 Coder Plus when lower sample workload cost matters most: $0.09.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash offers 1.05M context with $0.2 sample workload cost.
- Hy3 preview · Tencent · #1
- DeepSeek V4 Flash · DeepSeek · #2
- MiMo-V2.5 · Xiaomi · #3
- Claude Sonnet 4.6 · Anthropic · #4
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
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