o1-pro vs Qwen3.5 Plus 2026-04-20
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for o1-pro and Qwen3.5 Plus 2026-04-20.
o1-pro
The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide...
Qwen3.5 Plus 2026-04-20
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...
Technical Specifications
| Specification | o1-pro | Qwen3.5 Plus 2026-04-20 |
|---|---|---|
| Provider | OpenAI | Alibaba |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2025-03-19 | 2026-04-27 |
API Pricing Comparison
Input Price per Million Tokens
o1-pro
$150.00
Qwen3.5 Plus 2026-04-20
$0.30
Output Price per Million Tokens
o1-pro
$600.00
Qwen3.5 Plus 2026-04-20
$1.80
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
o1-pro Quirks & Gotchas
No developer gotchas reported.
Qwen3.5 Plus 2026-04-20 Quirks & Gotchas
No developer gotchas reported.