Model Comparison
gpt-oss-120b (low)
vs. Qwen3.5 Omni Flash
Comparing 2 AI models · 10 benchmarks · OpenAI, Alibaba
Recommended Pick
Op gpt-oss-120b (low) 9 metric wins Strongest on: Value, Output price, Blended price
Best Value
gpt-oss-120b (low)
100.0 value score
46.1 reasoning / $0.26/1M
Lowest Price
Qwen3.5 Omni Flash
$0.10/1M input price
Best Reasoning
gpt-oss-120b (low)
46.1 reasoning score
Blends available reasoning benchmarks
Best for Coding
gpt-oss-120b (low)
15.5 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
gpt-oss-120b (low) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Qwen3.5 Omni Flash is 1.5x cheaper on input tokens than gpt-oss-120b (low).
Speed gap
gpt-oss-120b (low) generates about 1.4x as many tokens per second as Qwen3.5 Omni Flash.
Reasoning gap
gpt-oss-120b (low) leads Qwen3.5 Omni Flash by 10.3 points on reasoning.
Coding gap
gpt-oss-120b (low) leads Qwen3.5 Omni Flash by 1.5 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 (low)
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 Omni Flash
Alibaba
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Full Comparison
| Metric | Top Pick Op gpt-oss-120b (low) | Al Qwen3.5 Omni Flash |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.15/1M | $0.10/1M |
| Output Cost | $0.60/1M | $0.80/1M |
| Blended (3:1) | $0.26/1M | $0.28/1M |
| Specifications | ||
| Organization | OpenAI | Alibaba |
| Release Date | Aug 5, 2025 | Mar 30, 2026 |
| Performance & Speed | ||
| Throughput | 348.9 tok/s | 254.9 tok/s |
| TTFT | 501ms | 992ms |
| Latency | 6234ms | 992ms |
| Composite Indices | ||
| Value Score | 100.0 | 74.1 |
| Reasoning Score | 46.1 | 35.7 |
| Intelligence | 24.5 | 25.9 |
| Coding | 15.5 | 14.0 |
| Math | 66.7 | — |
| Standard Benchmarks | ||
| GPQA | 67.2% | 74.2% |
| MMLU Pro | 77.5% | — |
| HLE | 5.2% | 7.1% |
| LiveCodeBench | 70.7% | — |
| AIME 2025 | 66.7% | — |
| SciCode | 36.0% | 25.5% |
| LCR | 43.7% | 44.0% |
| IFBench | 58.3% | 38.0% |
| TAU-bench v2 | 45.0% | 84.5% |
| TerminalBench Hard | 5.3% | 8.3% |
Key Takeaways
Qwen3.5 Omni Flash offers the best value at $0.10/1M, making it ideal for high-volume applications and cost-conscious projects.
gpt-oss-120b (low) has the strongest reasoning profile with a 46.1 reasoning score, combining the available reasoning-heavy benchmarks.
gpt-oss-120b (low) reaches a 15.5 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 (low)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
Qwen3.5 Omni Flash
- Cost-sensitive applications
- High-volume processing
