Model Comparison

GPT OSS 20B vs Nova Micro

GPT OSS 20B significantly outperforms across most benchmarks. Nova Micro is 1.5x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GPT OSS 20B outperforms in 2 benchmarks (GPQA, MMLU), while Nova Micro is better at 0 benchmarks.

GPT OSS 20B significantly outperforms across most benchmarks.

Thu Apr 30 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Nova Micro costs less

For input processing, GPT OSS 20B ($0.05/1M tokens) is 1.7x more expensive than Nova Micro ($0.03/1M tokens).

For output processing, GPT OSS 20B ($0.20/1M tokens) is 1.4x more expensive than Nova Micro ($0.14/1M tokens).

In conclusion, GPT OSS 20B is more expensive than Nova Micro.*

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

Lowest available price from all providers
Thu Apr 30 2026 • llm-stats.com
OpenAI
GPT OSS 20B
Input tokens$0.05
Output tokens$0.20
Best providerNovita
Amazon
Nova Micro
Input tokens$0.03
Output tokens$0.14
Best providerAWS Bedrock
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

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

OpenAI
GPT OSS 20B
Input131,072 tokens
Output32,768 tokens
Amazon
Nova Micro
Input128,000 tokens
Output128,000 tokens
Thu Apr 30 2026 • llm-stats.com

License

Usage and distribution terms

GPT OSS 20B is licensed under Apache 2.0, while Nova Micro uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

GPT OSS 20B

Apache 2.0

Open weights

Nova Micro

Proprietary

Closed source

Release Timeline

When each model was launched

GPT OSS 20B was released on 2025-08-05, while Nova Micro was released on 2024-11-20.

GPT OSS 20B is 9 months newer than Nova Micro.

GPT OSS 20B

Aug 5, 2025

8 months ago

8mo newer
Nova Micro

Nov 20, 2024

1.4 years 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. Nova Micro is available from Bedrock.

GPT OSS 20B

novita logo
Novita
Input Price:Input: $0.05/1MOutput Price:Output: $0.20/1M
fireworks logo
Fireworks
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M
groq logo
Groq
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M
openai logo
OpenAI
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M

Nova Micro

bedrock logo
AWS Bedrock
Input Price:Input: $0.03/1MOutput Price:Output: $0.14/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (131,072 tokens)
Has open weights
Higher GPQA score (71.5% vs 40.0%)
Higher MMLU score (85.3% vs 77.6%)
Amazon
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT OSS 20B
Amazon
Nova Micro

FAQ

Common questions about GPT OSS 20B vs Nova Micro

GPT OSS 20B significantly outperforms across most benchmarks. GPT OSS 20B is made by OpenAI and Nova Micro is made by Amazon. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT OSS 20B scores MMLU: 85.3%, CodeForces: 74.3%, GPQA: 71.5%, TAU-bench Retail: 54.8%, HealthBench: 42.5%. Nova Micro scores GSM8k: 92.3%, ARC-C: 90.2%, Translation Set1→en COMET22: 88.7%, Translation en→Set1 COMET22: 88.5%, IFEval: 87.2%.
Nova Micro is 1.7x cheaper for input tokens. GPT OSS 20B costs $0.05/M input and $0.20/M output via novita. Nova Micro costs $0.03/M input and $0.14/M output via bedrock.
GPT OSS 20B supports 131K tokens and Nova Micro supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (131K vs 128K), input pricing ($0.05 vs $0.03/M), licensing (Apache 2.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.
GPT OSS 20B is developed by OpenAI and Nova Micro is developed by Amazon.