Side-by-side comparison
o3 vs Claude Haiku 4.5
Anthropic
Claude Haiku 4.5
👁 Vision
🔧 Tools
{} JSON
Input / 1M
$1.0000
Output / 1M
$5.0000
| o3 | Claude Haiku 4.5 | |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 200,000 | 200,000 |
| Capabilities Optional capabilities the model advertises: vision (images), tools (function calling), json_mode (structured output). | vision, tools, json_mode | vision, tools, json_mode |
| Input $ / 1M tokens Cost for tokens you send (prompt + context). Cheaper side highlighted. Glossary → | 2.0000 | 1.0000 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 8.0000 | 5.0000 |
Frequently asked questions
Which is cheaper, o3 or Claude Haiku 4.5?
Claude Haiku 4.5 is cheaper than o3 on a 50/50 input/output blend by about $2 per 1M tokens. Exact savings depend on your input-vs-output ratio — use the cost calculator on this page for a workload-specific estimate.
What is the difference between o3 and Claude Haiku 4.5?
o3 comes from OpenAI; Claude Haiku 4.5 comes from Anthropic. They differ in pricing, context window, and supported capabilities — see the side-by-side table on this page for the exact figures, refreshed nightly.