GPT-5 Codex vs Nova Premier 1.0 (Comparative Analysis)
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Comparative Analysis: GPT-5 Codex vs. Nova Premier 1.0
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Overview
GPT-5 Codex was released 1 month before Nova Premier 1.0.
 GPT-5 Codex |  Nova Premier 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 | 400K tokens | 1M tokens |
Output Token Limit Maximum output tokens this model can generate at once | 128K tokens | 32K tokens |
Release Date When this model first became publicly available | September 23, 2025 9 months ago September 23rd, 2025 | October 31, 2025 8 months ago October 31st, 2025 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GPT-5 Codex | Nova Premier 1.0 | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image | 📝Text🖼️Image |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | GPT | Nova |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation | ✓Function CallingStructured OutputReasoning Mode✓Content Moderation |
Pricing
GPT-5 Codex is roughly 0.5x less expensive compared to Nova Premier 1.0 for input tokens and roughly 0.8x less expensive for output tokens.
| GPT-5 Codex | Nova Premier 1.0 | |
|---|---|---|
Input Token Cost Cost per million input tokens | $1.25 per million tokens | $2.50 per million tokens |
Output Token Cost Cost per million outut tokens | $10.00 per million tokens | $12.50 per million tokens |
Benchmarks
Compare relevant benchmarks between GPT-5 Codex and Nova Premier 1.0.
| GPT-5 Codex | Nova Premier 1.0 | |
|---|---|---|
MMLU Measures knowledge across 57 subjects like law, math, history, and science | Benchmark not available. | Benchmark not available. |
MMMU Measures understanding of combined text and images across various domains | Benchmark not available. | Benchmark not available. |
HellaSwag Measures common sense reasoning by having models complete sentences about everyday situations | Benchmark not available. | Benchmark not available. |
At a Glance
Quick overview of what makes GPT-5 Codex and Nova Premier 1.0 unique.
GPT-5 Codex by OpenAI understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 400K token context window. Reasonably priced at $1.25/M input and $10.00/M output tokens. Includes built-in content moderation for safer outputs. Released September 23rd, 2025.Nova Premier 1.0 by Amazon understands both text and images, can use external tools and APIs. It can handle standard conversations with its 1M token context window. Reasonably priced at $2.50/M input and $12.50/M output tokens. Includes built-in content moderation for safer outputs. Released October 31st, 2025.Explore More Comparisons
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Compare Nova Premier 1.0 with:
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Best models for coding and development
🎨Creative & Roleplay
Models optimized for creative writing
📢Marketing
Content creation and marketing tasks
💻Technology
Technical analysis and explanations
🔬Science
Scientific research and analysis
🌐Translation
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