GPT-5.5 vs Qwen3.5 397B A17B
API pricing, context window and capabilities for GPT-5.5 and Qwen3.5 397B A17B, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGPT-5.5 wins on Terminal-Bench, on intelligence and on context window. Qwen3.5 397B A17B wins on price.
Price
Qwen3.5 397B A17B
Terminal-Bench
GPT-5.5
Intelligence
GPT-5.5
Context window
GPT-5.5
Key takeaways
who wins on what, from the published numbersGPT-5.5 wins
- Larger context window (1.1M vs 262K)
Qwen3.5 397B A17B wins
- Cheaper input ($5.00 vs $0.164 /1M)
- Cheaper output ($30.00 vs $0.986 /1M)
- Higher max output (128K vs 262K)
- More serving providers (6 vs 7)
Cheaper overall
Qwen3.5 397B A17B
$0.164 + $0.986 /1M
Larger context
GPT-5.5
1.1M
More providers
Qwen3.5 397B A17B
7 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower.
| GPT-5.5 | Qwen3.5 397B A17B | |
|---|---|---|
| Input $/1M | $5.00via OpenAI | $0.164via Aihubmix best |
| Output $/1M | $30.00via OpenAI | $0.986via Aihubmix best |
| Context window | 1.1M best | 262K |
| Max output | 128K | 262K best |
| Serving providers | 6 | 7 best |
| Date | Released Apr 23, 2026 | Released Feb 16, 2026 |
Benchmarks
Benchmark scores, side by side| GPT-5.5 | Qwen3.5 397B A17B | |
|---|---|---|
| Intelligence | 38.4 best | 18.4 |
| Terminal-Bench | 84% best | 51% |
| GPQA Diamond | 94% best | 89% |
| Output speed | 102 t/s best | 56 t/s |
| Latency (TTFT) | 70.60s | 2.44s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GPT-5.5
via OpenAI
$55
Qwen3.5 397B A17B
via Aihubmix
$1.81
Capabilities
feature support, side by side| Feature | GPT-5.5 | Qwen3.5 397B A17B |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, GPT-5.5 or Qwen3.5 397B A17B?
Qwen3.5 397B A17B is cheaper for input ($5.00 vs $0.164 per 1M tokens) from Aihubmix. Qwen3.5 397B A17B is cheaper for output ($30.00 vs $0.986 per 1M tokens) from Aihubmix.
What is the context window difference between GPT-5.5 and Qwen3.5 397B A17B?
GPT-5.5 has a 1.1M-token context window and Qwen3.5 397B A17B has 262K tokens, so GPT-5.5 can take a larger prompt.
How do GPT-5.5 and Qwen3.5 397B A17B compare on benchmarks?
On the tracked benchmarks, GPT-5.5 leads on Terminal-Bench, and GPT-5.5 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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