Last refreshed 2026-06-15. Next refresh: weekly.
Why use o3 on OpenRouter?
OpenRouter offers o3 with pay-as-you-go pricing at $2.00/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare o3 across 3 providers to find the best fit for your use caseInput / 1M
$2.00
Output / 1M
$8.00
Cache
Not sourced
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: openai/o3Model ID
openai/o3Request example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
openai/o3.Gotchas
- Use provider model ID "openai/o3", not the LLMReference slug "o3".
Compare o3 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenAI API | $2.00 | $8.00 |
| OpenRouter | $2.00 | $8.00 |
| Vercel AI Gateway | $2.00 | $8.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $2.00 |
| Output tokens | $8.00 |
Capabilities
VisionMultimodalReasoningJSON / Tool useStructured OutputsCode ExecutionPrompt CachingBatch API
About o3
OpenAI o3 reasoning model with advanced multi-step problem-solving capabilities.
Get Started
Model Specs
Released2025-04-16
Context200k
ArchitectureDecoder Only
Knowledge cutoff2024-06