GPT-5.4 Nano vs Qwen 3.5 397B
Complete pricing and performance comparison between OpenAI's GPT-5.4 Nano and Alibaba's Qwen 3.5 397B.
Quick Verdict
Cheaper
GPT-5.4 Nano
3.0x cheaper input, 2.9x cheaper output
Larger Context
GPT-5.4 Nano
400K vs 128K
Pricing Comparison
| Spec | GPT-5.4 Nano | Qwen 3.5 397B | Difference |
|---|---|---|---|
| Provider | OpenAI | Alibaba | |
| Input / 1M tokens | $0.2 | $0.6 | GPT-5.4 Nano is 67% more expensive |
| Output / 1M tokens | $1.25 | $3.6 | GPT-5.4 Nano is 65% more expensive |
| Context Window | 400K | 128K | 3x difference |
| Max Output | 128K | 33K | |
| Tokenizer | o200k_base | cl100k_base |
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | GPT-5.4 Nano | Qwen 3.5 397B | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0006 | $0.0017 | GPT-5.4 Nano saves $0.0011 |
10 requests 10K in / 3K out | $0.0057 | $0.017 | GPT-5.4 Nano saves $0.011 |
100 requests 100K in / 30K out | $0.058 | $0.168 | GPT-5.4 Nano saves $0.110 |
1,000 requests 1M in / 300K out | $0.575 | $1.68 | GPT-5.4 Nano saves $1.11 |
10,000 requests 10M in / 3M out | $5.75 | $16.80 | GPT-5.4 Nano saves $11.05 |
1M requests/mo 1B in / 300M out | $575.00 | $1680.00 | GPT-5.4 Nano saves $1105.00 |
Pros & Cons
GPT-5.4 Nano Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (400K vs 128K)
- +Higher max output tokens
Qwen 3.5 397B Strengths
Part of the Alibaba ecosystem
When to Use Each Model
Choose GPT-5.4 Nano for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
Choose Qwen 3.5 397B for
- →Projects already integrated with Alibaba's ecosystem
Frequently Asked Questions
Which is cheaper, GPT-5.4 Nano or Qwen 3.5 397B?
For input tokens, GPT-5.4 Nano is 3.0x cheaper at $0.2/1M tokens. For output tokens, GPT-5.4 Nano is 2.9x cheaper at $1.25/1M tokens. At typical usage (1M input + 300K output), GPT-5.4 Nano costs $0.575 vs Qwen 3.5 397B at $1.68.
What's the context window difference?
GPT-5.4 Nano supports 400K context (400,000 tokens), while Qwen 3.5 397B supports 128K (128,000 tokens). GPT-5.4 Nano can handle 3x more context in a single request.
When should I choose GPT-5.4 Nano over Qwen 3.5 397B?
Choose GPT-5.4 Nano when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (400K vs 128K), Higher max output tokens. Choose Qwen 3.5 397B when you need: a Alibaba ecosystem model.
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): GPT-5.4 Nano = $5.75, Qwen 3.5 397B = $16.80. At 10K input + 1K output per request (longer conversations): GPT-5.4 Nano = $32.50, Qwen 3.5 397B = $96.00.
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