OpenAI o1 vs Qwen 2.5 — Which Is Better in 2026?
OpenAI o1 vs Qwen 2.5: independent head-to-head scored on Performance, Value, Reliability, and Ease of Use. See scores, pros, cons, and our verdict.
OpenAI
OpenAI o1
Best AI for hard reasoning and math
Alibaba
Qwen 2.5
Best multilingual open model from China
8.0
Overall Score
WINNER8.0
Overall Score
Our Verdict
OpenAI o1 scores higher overall (8.0/10 vs 8.0/10), winning on Performance and Reliability. Best AI for hard reasoning, math, and science. Expensive and slow but uniquely powerful.
Pricing — OpenAI o1
API: $15/M input · $60/M output · Pro plan
Pricing — Qwen 2.5
API via Alibaba Cloud · Open-weights free
OpenAI o1
Pros
- ✓Best multi-step mathematical reasoning available
- ✓Excels at PhD-level problem solving
- ✓Think-before-answer approach reduces errors
Cons
- ✗Much slower than standard GPT models
- ✗Very expensive for routine use
- ✗Not suitable for conversational or creative tasks
Best For
Complex math, scientific reasoning, hard coding challenges, research problems
Qwen 2.5
Pros
- ✓Excellent Chinese and Asian language support
- ✓Open-weights — self-host for free
- ✓Strong coding benchmarks for its size
Cons
- ✗Data governance concerns for Western enterprises
- ✗Less English writing quality than Claude/GPT
- ✗Smaller Western ecosystem and tooling
Best For
Asian language tasks, multilingual apps, cost-sensitive developers outside enterprise
Choose OpenAI o1 if…
- →Performance is your top priority — OpenAI o1 leads by 1.5 points
- →Complex math
- →You also value Reliability — OpenAI o1 wins that dimension too
Choose Qwen 2.5 if…
- →Value is your top priority — Qwen 2.5 leads by 3.2 points
- →Asian language tasks
- →Alibaba support, documentation, and community suit your team
Frequently Asked Questions
Is OpenAI o1 better than Qwen 2.5?
OpenAI o1 scores 8.0/10 overall vs 8.0/10 for Qwen 2.5, with an edge on Performance and Reliability and Ease of Use. That said, "Qwen 2.5" may be the better pick if value is your priority. The right choice depends on your use case.
What is the pricing difference between OpenAI o1 and Qwen 2.5?
OpenAI o1: API: $15/M input · $60/M output · Pro plan. Qwen 2.5: API via Alibaba Cloud · Open-weights free. Compare usage volumes and features needed to determine total cost of ownership for your team.
Which is better for complex math?
OpenAI o1 is generally stronger here, scoring 8.0/10 overall. Best AI for hard reasoning, math, and science. Expensive and slow but uniquely powerful. For more niche requirements like value, Qwen 2.5 may be worth evaluating.
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