R1 0528 vs GPT-5.1-Codex-Max (Comparative Analysis)
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Comparative Analysis: R1 0528 vs. GPT-5.1-Codex-Max
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Overview
R1 0528 was released 6 months before GPT-5.1-Codex-Max.
 R1 0528 |  GPT-5.1-Codex-Max | |
|---|---|---|
Model Provider The organization behind this AI's development | DeepSeek | OpenAI |
Input Context Window Maximum input tokens this model can process at once | 163.8K tokens | 400K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 32.8K tokens | 128K tokens |
Release Date When this model first became publicly available | May 28, 2025 1 year ago May 28th, 2025 | December 4, 2025 8 months ago December 4th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | March 31, 2025 | Not reported |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
R1 0528 | GPT-5.1-Codex-Max | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🖼️Image |
Reasoning Controls Defaults and configurable reasoning effort | Always enabled | Always enabledEffort: Extra High, High, Medium, LowDefault: Medium |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | DeepSeek | GPT |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation |
Open Source Model availability | Available on HuggingFace → | Proprietary |
Pricing
R1 0528 is roughly 0.4x less expensive compared to GPT-5.1-Codex-Max for input tokens and roughly 0.2x less expensive for output tokens.
| R1 0528 | GPT-5.1-Codex-Max | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.50 per million tokens | $1.25 per million tokens |
Output Token Cost Cost per million output tokens | $2.15 per million tokens | $10.00 per million tokens |
Web Search Cost Additional cost for each web search operation | Not specified | $0.01 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.35 per million tokens | $0.13 per million tokens |
Benchmarks
Compare relevant benchmarks between R1 0528 and GPT-5.1-Codex-Max.
| R1 0528 | GPT-5.1-Codex-Max | |
|---|---|---|
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,204 Elo (#45 in Data Viz (60.7% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes R1 0528 and GPT-5.1-Codex-Max unique.
R1 0528 by DeepSeek can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 163.8K token context window. Reasonably priced at $0.50/M input and $2.15/M output tokens. Released May 28th, 2025.GPT-5.1-Codex-Max 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. Released December 4th, 2025.Explore More Comparisons
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Compare GPT-5.1-Codex-Max with:
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