Model Comparison
GPT OSS 20B vs Qwen3-Next-80B-A3B-InstructWhich is better in 2026?
Qwen3-Next-80B-A3B-Instruct significantly outperforms across most benchmarks. GPT OSS 20B is 5.6x cheaper per token.
Verdict: GPT OSS 20B vs Qwen3-Next-80B-A3B-Instruct — which is better?
GPT OSS 20B (by OpenAI) and Qwen3-Next-80B-A3B-Instruct (by Alibaba Cloud / Qwen Team) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
GPT OSS 20B outperforms in 0 benchmarks, while Qwen3-Next-80B-A3B-Instruct is better at 2 benchmarks (GPQA, TAU-bench Retail). Qwen3-Next-80B-A3B-Instruct significantly outperforms across most benchmarks.
On price, GPT OSS 20B is roughly 5.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT OSS 20B also accepts a larger context window (131,072 input tokens), making it the stronger choice for long documents and large codebases.
Choose GPT OSS 20B if…
- cost matters — it's about 5.6x cheaper per token
- you process long inputs — it offers a 131,072 token context window
Choose Qwen3-Next-80B-A3B-Instruct if…
- you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
- you want the most recent training data — it shipped Sep 2025
Performance Benchmarks
Comparative analysis across standard metrics
GPT OSS 20B outperforms in 0 benchmarks, while Qwen3-Next-80B-A3B-Instruct is better at 2 benchmarks (GPQA, TAU-bench Retail).
Qwen3-Next-80B-A3B-Instruct significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, GPT OSS 20B ($0.05/1M tokens) is 3.0x cheaper than Qwen3-Next-80B-A3B-Instruct ($0.15/1M tokens).
For output processing, GPT OSS 20B ($0.20/1M tokens) is 7.5x cheaper than Qwen3-Next-80B-A3B-Instruct ($1.50/1M tokens).
In conclusion, Qwen3-Next-80B-A3B-Instruct is more expensive than GPT OSS 20B.*
* Using a 3:1 ratio of input to output tokens
Model Size
Parameter count comparison
Qwen3-Next-80B-A3B-Instruct has 59.1B more parameters than GPT OSS 20B, making it 282.8% larger.
Context Window
Maximum input and output token capacity
GPT OSS 20B accepts 131,072 input tokens compared to Qwen3-Next-80B-A3B-Instruct's 65,536 tokens. Qwen3-Next-80B-A3B-Instruct can generate longer responses up to 65,536 tokens, while GPT OSS 20B is limited to 32,768 tokens.
License
Usage and distribution terms
Both models are licensed under Apache 2.0.
Both models share the same licensing terms, providing consistent usage rights.
Apache 2.0
Open weights
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT OSS 20B was released on 2025-08-05, while Qwen3-Next-80B-A3B-Instruct was released on 2025-09-10.
Qwen3-Next-80B-A3B-Instruct is 1 month newer than GPT OSS 20B.
Aug 5, 2025
10 months ago
Sep 10, 2025
9 months ago
1mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GPT OSS 20B is available from Novita, Fireworks, Groq, OpenAI. Qwen3-Next-80B-A3B-Instruct is available from Novita.
GPT OSS 20B
Qwen3-Next-80B-A3B-Instruct
Outputs Comparison
Key Takeaways
GPT OSS 20B
View detailsOpenAI
Qwen3-Next-80B-A3B-Instruct
View detailsAlibaba Cloud / Qwen Team
Detailed Comparison
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FAQ
Common questions about GPT OSS 20B vs Qwen3-Next-80B-A3B-Instruct.