Model Comparison
gpt-oss-120b (high)
vs. Qwen3.5 4B (Reasoning)
Comparing 2 AI models · 10 benchmarks · OpenAI, Alibaba
Recommended Pick
Op gpt-oss-120b (high) 10 metric wins Strongest on: Throughput, Latency, Reasoning
Best Value
Qwen3.5 4B (Reasoning)
100.0 value score
37.3 reasoning / $0.06/1M
Lowest Price
Qwen3.5 4B (Reasoning)
$0.03/1M input price
Best Reasoning
gpt-oss-120b (high)
63.4 reasoning score
Blends available reasoning benchmarks
Best for Coding
gpt-oss-120b (high)
28.6 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
Qwen3.5 4B (Reasoning) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Qwen3.5 4B (Reasoning) is 5.0x cheaper on input tokens than gpt-oss-120b (high).
Speed gap
gpt-oss-120b (high) generates about 1.8x as many tokens per second as Qwen3.5 4B (Reasoning).
Reasoning gap
gpt-oss-120b (high) leads Qwen3.5 4B (Reasoning) by 26.0 points on reasoning.
Coding gap
gpt-oss-120b (high) leads Qwen3.5 4B (Reasoning) by 11.1 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
gpt-oss-120b (high)
OpenAI
TTFT
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Time
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tok/s
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Tokens
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Cost
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Qwen3.5 4B (Reasoning)
Alibaba
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
Full Comparison
| Metric | Top Pick Op gpt-oss-120b (high) | Al Qwen3.5 4B (Reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.15/1M | $0.03/1M |
| Output Cost | $0.60/1M | $0.15/1M |
| Blended (3:1) | $0.26/1M | $0.06/1M |
| Specifications | ||
| Organization | OpenAI | Alibaba |
| Release Date | Aug 5, 2025 | Mar 2, 2026 |
| Performance & Speed | ||
| Throughput | 367.8 tok/s | 206.8 tok/s |
| TTFT | 521ms | 225ms |
| Latency | 5960ms | 9897ms |
| Composite Indices | ||
| Value Score | 38.8 | 100.0 |
| Reasoning Score | 63.4 | 37.3 |
| Intelligence | 33.3 | 27.1 |
| Coding | 28.6 | 17.5 |
| Math | 93.4 | — |
| Standard Benchmarks | ||
| GPQA | 78.2% | 77.1% |
| MMLU Pro | 80.8% | — |
| HLE | 18.5% | 7.8% |
| LiveCodeBench | 87.8% | — |
| AIME 2025 | 93.4% | — |
| SciCode | 38.9% | 16.1% |
| LCR | 50.7% | 55.7% |
| IFBench | 69.0% | 52.0% |
| TAU-bench v2 | 65.8% | 92.1% |
| TerminalBench Hard | 23.5% | 18.2% |
Key Takeaways
Qwen3.5 4B (Reasoning) offers the best value at $0.03/1M, making it ideal for high-volume applications and cost-conscious projects.
gpt-oss-120b (high) has the strongest reasoning profile with a 63.4 reasoning score, combining the available reasoning-heavy benchmarks.
gpt-oss-120b (high) reaches a 28.6 coding index, making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
gpt-oss-120b (high)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
Qwen3.5 4B (Reasoning)
- Cost-sensitive applications
- High-volume processing
