GPT OSS 20B vs Qwen3 30B A3B Comparison

Comparing GPT OSS 20B and Qwen3 30B A3B across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT OSS 20B outperforms in 1 benchmarks (GPQA), while Qwen3 30B A3B is better at 0 benchmarks.

GPT OSS 20B significantly outperforms across most benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT OSS 20B costs less

For input processing, GPT OSS 20B ($0.05/1M tokens) is 2.0x cheaper than Qwen3 30B A3B ($0.10/1M tokens).

For output processing, GPT OSS 20B ($0.20/1M tokens) is 1.5x cheaper than Qwen3 30B A3B ($0.30/1M tokens).

In conclusion, Qwen3 30B A3B is more expensive than GPT OSS 20B.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

GPT OSS 20B

Input tokens$0.05

Output tokens$0.20

Best providerNovita

Qwen3 30B A3B

Input tokens$0.10

Output tokens$0.30

Best providerDeepinfra

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Model Size

Parameter count comparison

9.6B diff

Qwen3 30B A3B has 9.6B more parameters than GPT OSS 20B, making it 45.9% larger.

GPT OSS 20B

20.9Bparameters

Qwen3 30B A3B

30.5Bparameters

20.9B

GPT OSS 20B

30.5B

Qwen3 30B A3B

Context Window

Maximum input and output token capacity

GPT OSS 20B accepts 131,072 input tokens compared to Qwen3 30B A3B's 128,000 tokens. Qwen3 30B A3B can generate longer responses up to 128,000 tokens, while GPT OSS 20B is limited to 32,768 tokens.

GPT OSS 20B

Input131,072 tokens

Output32,768 tokens

Qwen3 30B A3B

Input128,000 tokens

Output128,000 tokens

Tue Mar 17 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under Apache 2.0.

Both models share the same licensing terms, providing consistent usage rights.

GPT OSS 20B

Apache 2.0

Open weights

Qwen3 30B A3B

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT OSS 20B was released on 2025-08-05, while Qwen3 30B A3B was released on 2025-04-29.

GPT OSS 20B is 3 months newer than Qwen3 30B A3B.

GPT OSS 20B

Aug 5, 2025

7 months ago

3mo newer

Qwen3 30B A3B

Apr 29, 2025

10 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT OSS 20B is available from Novita, Fireworks, Groq, OpenAI. Qwen3 30B A3B is available from DeepInfra, Novita, Fireworks. The availability of providers can affect quality of the model and reliability.