Compare · ModelsLive · 2 picked · head to head
gpt-oss-20b (free) vs Qwen3.5 397B A17B
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Qwen3.5 397B A17B wins on 9/9 benchmarks
Qwen3.5 397B A17B wins 9 of 9 shared benchmarks. Leads in speed · math · knowledge.
Category leads
speed·Qwen3.5 397B A17Bmath·Qwen3.5 397B A17Bknowledge·Qwen3.5 397B A17Blanguage·Qwen3.5 397B A17Bcoding·Qwen3.5 397B A17B
Hype vs Reality
Attention vs performance
gpt-oss-20b (free)
#31 by perf·no signal
Qwen3.5 397B A17B
#48 by perf·#2 by attention
Best value
Qwen3.5 397B A17B
gpt-oss-20b (free)
n/a
$0.00/M
Qwen3.5 397B A17B
29.6 pts/$
$2.02/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Alibaba (Qwen)
$293.0B·Tier 1
Head to head
9 benchmarks · 2 models
gpt-oss-20b (free)Qwen3.5 397B A17B
Artificial Analysis · Agentic Index
Qwen3.5 397B A17B leads by +16.8
Artificial Analysis Agentic Index · a composite score measuring how well a model performs in agentic workflows · multi-step tool use, planning, error recovery, and autonomous task completion. Aggregates results from multiple agentic benchmarks including SWE-bench, tool-use tests, and planning evaluations. The canonical single-number metric for "how good is this model as an agent?"
gpt-oss-20b (free)
3.1
Qwen3.5 397B A17B
19.9
Artificial Analysis · Coding Index
Qwen3.5 397B A17B leads by +27.5
Artificial Analysis Coding Index · a composite score that aggregates performance across multiple coding benchmarks into a single index. Tracks code generation quality, debugging ability, multi-language competence, and real-world software engineering tasks. Used by Artificial Analysis to rank model coding capability in a normalized, comparable format. Useful for developers choosing between models for coding-heavy workloads.
gpt-oss-20b (free)
20.7
Qwen3.5 397B A17B
48.2
Artificial Analysis · Quality Index
Qwen3.5 397B A17B leads by +6.6
gpt-oss-20b (free)
14.9
Qwen3.5 397B A17B
21.4
OpenCompass · AIME2025
Qwen3.5 397B A17B leads by +4.4
gpt-oss-20b (free)
87.9
Qwen3.5 397B A17B
92.3
OpenCompass · GPQA-Diamond
Qwen3.5 397B A17B leads by +19.5
gpt-oss-20b (free)
68.9
Qwen3.5 397B A17B
88.4
OpenCompass · HLE
Qwen3.5 397B A17B leads by +15.9
gpt-oss-20b (free)
11.6
Qwen3.5 397B A17B
27.5
OpenCompass · IFEval
Qwen3.5 397B A17B leads by +2.6
gpt-oss-20b (free)
88.9
Qwen3.5 397B A17B
91.5
OpenCompass · LiveCodeBenchV6
Qwen3.5 397B A17B leads by +14.6
gpt-oss-20b (free)
68.4
Qwen3.5 397B A17B
83.0
OpenCompass · MMLU-Pro
Qwen3.5 397B A17B leads by +14.8
gpt-oss-20b (free)
72.8
Qwen3.5 397B A17B
87.6
Full benchmark table
| Benchmark | gpt-oss-20b (free) | Qwen3.5 397B A17B |
|---|---|---|
Artificial Analysis · Agentic Index Artificial Analysis Agentic Index · a composite score measuring how well a model performs in agentic workflows · multi-step tool use, planning, error recovery, and autonomous task completion. Aggregates results from multiple agentic benchmarks including SWE-bench, tool-use tests, and planning evaluations. The canonical single-number metric for "how good is this model as an agent?" | 3.1 | 19.9 |
Artificial Analysis · Coding Index Artificial Analysis Coding Index · a composite score that aggregates performance across multiple coding benchmarks into a single index. Tracks code generation quality, debugging ability, multi-language competence, and real-world software engineering tasks. Used by Artificial Analysis to rank model coding capability in a normalized, comparable format. Useful for developers choosing between models for coding-heavy workloads. | 20.7 | 48.2 |
Artificial Analysis · Quality Index | 14.9 | 21.4 |
OpenCompass · AIME2025 | 87.9 | 92.3 |
OpenCompass · GPQA-Diamond | 68.9 | 88.4 |
OpenCompass · HLE | 11.6 | 27.5 |
OpenCompass · IFEval | 88.9 | 91.5 |
OpenCompass · LiveCodeBenchV6 | 68.4 | 83.0 |
OpenCompass · MMLU-Pro | 72.8 | 87.6 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.00 | $0.00 | 131K tokens (~66 books) | — | |
| $0.55 | $3.50 | 262K tokens (~131 books) | $12.88 |
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