Last refreshed 2026-05-11. Next refresh: weekly.
Why use GPT-5 Mini on OpenRouter?
OpenRouter offers GPT-5 Mini with pay-as-you-go pricing at $0.25/1M 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 GPT-5 Mini across 4 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: openai/gpt-5-miniopenai/gpt-5-miniRequest example
openai/gpt-5-mini.Gotchas
- Use provider model ID "openai/gpt-5-mini", not the LLMReference slug "gpt-5-mini".
Compare GPT-5 Mini Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Replicate API | $0.25 | $2.00 |
| OpenRouter | $0.25 | $2.00 |
| OpenAI API | $0.25 | $2.00 |
| Vercel AI Gateway | $0.25 | $2.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.25 |
| Output tokens | $2.00 |
Capabilities
About GPT-5 Mini
Near-frontier intelligence for cost-sensitive, low-latency, high-volume workloads. Released August 2025. Replaces o4-mini (shutting down Oct 2026).
FAQ
What does GPT-5 Mini cost on OpenRouter?
On OpenRouter, GPT-5 Mini costs $0.25 per 1M input tokens and $2 per 1M output tokens.
What is the context window for GPT-5 Mini on OpenRouter?
GPT-5 Mini supports a 400k token context window on OpenRouter.
How does OpenRouter compare to other GPT-5 Mini providers?
GPT-5 Mini is available from 4 providers. The cheapest input pricing is $0.25/1M tokens from Replicate API.
What API model ID do I use for GPT-5 Mini on OpenRouter?
Use the model ID openai/gpt-5-mini when calling OpenRouter's API.
Who created GPT-5 Mini?
GPT-5 Mini was created by OpenAI as part of the GPT-5 model family.
Is GPT-5 Mini open source?
GPT-5 Mini is not open source; the seed data lists it as proprietary.