gpt-oss-20b vs Nova Pro 1.0 (Comparative Analysis)
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Comparative Analysis: gpt-oss-20b vs. Nova Pro 1.0
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Overview
Nova Pro 1.0 was released 8 months before gpt-oss-20b.
 gpt-oss-20b |  Nova Pro 1.0 | |
|---|---|---|
Model Provider The organization behind this AI's development | OpenAI | Amazon |
Input Context Window Maximum input tokens this model can process at once | 131.1K tokens | 300K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 131.1K tokens | 5.1K tokens |
Release Date When this model first became publicly available | August 5, 2025 11 months ago August 5th, 2025 | December 5, 2024 1 year ago December 5th, 2024 |
Knowledge Cutoff Latest training-data date reported by the provider | June 30, 2024 | October 31, 2024 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
gpt-oss-20b | Nova Pro 1.0 | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🖼️Image |
Reasoning Controls Defaults and configurable reasoning effort | Always enabledEffort: High, Medium, LowDefault: Medium | Not reported |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | GPT | Nova |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | ✓Function CallingStructured OutputReasoning Mode✓Content Moderation |
Open Source Model availability | Available on HuggingFace → | Proprietary |
Pricing
gpt-oss-20b is roughly 0.04x less expensive compared to Nova Pro 1.0 for input tokens and roughly 0.04x less expensive for output tokens.
| gpt-oss-20b | Nova Pro 1.0 | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.03 per million tokens | $0.80 per million tokens |
Output Token Cost Cost per million output tokens | $0.13 per million tokens | $3.20 per million tokens |
Cache Read Cost Cost to reuse cached input tokens | $0.03 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between gpt-oss-20b and Nova Pro 1.0.
| gpt-oss-20b | Nova Pro 1.0 | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | 14.9 (Artificial Analysis index; higher is better) | Benchmark not available. |
Coding Index Programming performance across independent evaluations | 20.7 (Artificial Analysis index; higher is better) | Benchmark not available. |
Agentic Index Ability to complete multi-step agentic tasks | 3.1 (Artificial Analysis index; higher is better) | Benchmark not available. |
Best Design Arena Score Highest human-preference Elo score across design arenas | 971 Elo (#96 in Data Viz (39.7% win rate)) | 829 Elo (#115 in Website (21.4% win rate)) |
At a Glance
Quick overview of what makes gpt-oss-20b and Nova Pro 1.0 unique.
gpt-oss-20b by OpenAI can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 131.1K token context window. Very affordable at $0.03/M input and $0.13/M output tokens. Released August 5th, 2025.Nova Pro 1.0 by Amazon understands both text and images, can use external tools and APIs. It can handle standard conversations with its 300K token context window. Reasonably priced at $0.80/M input and $3.20/M output tokens. Includes built-in content moderation for safer outputs. Released December 5th, 2024.Explore More Comparisons
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Technical analysis and explanations
🔬Science
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