 Claude Opus Latest |  GPT-5 Chat | |
|---|---|---|
Model Provider The organization behind this AI's development | Anthropic | OpenAI |
Input Context Window Maximum input tokens this model can process at once | 1M tokens | 128K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 128K tokens | 16.4K tokens |
Release Date When this model first became publicly available | April 21, 2026 10 days ago April 21st, 2026 | August 7, 2025 8 months ago August 7th, 2025 |
Claude Opus Latest | GPT-5 Chat | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image | 📁File🖼️Image📝Text |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Router | GPT |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | Function Calling✓Structured OutputReasoning Mode✓Content Moderation |
| Claude Opus Latest | GPT-5 Chat | |
|---|---|---|
Input Token Cost Cost per million input tokens | $5.00 per million tokens | $1.25 per million tokens |
Output Token Cost Cost per million outut tokens | $25.00 per million tokens | $10.00 per million tokens |
| Claude Opus Latest | GPT-5 Chat | |
|---|---|---|
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. |
Claude Opus Latest by Anthropic understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Premium pricing at $5.00/M input and $25.00/M output tokens. Released April 21st, 2026.GPT-5 Chat by OpenAI understands both text and images, generates structured data. It can handle standard conversations with its 128K 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 August 7th, 2025.Compare your models with top performers across different categories
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