Last refreshed 2026-06-15. Next refresh: weekly.
Why use gpt-oss-120b on OpenRouter?
OpenRouter offers gpt-oss-120b with pay-as-you-go pricing at $0.04/1M 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-oss-120b across 14 providers to find the best fit for your use caseInput / 1M
$0.037
Output / 1M
$0.17
Cache
Not sourced
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: openai/gpt-oss-120bModel ID
openai/gpt-oss-120bRequest example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
openai/gpt-oss-120b.Gotchas
- Use provider model ID "openai/gpt-oss-120b", not the LLMReference slug "gpt-oss-120b".
Compare gpt-oss-120b Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Cloudflare Workers AI | $0.35 | $0.75 |
| OpenRouter | $0.04 | $0.17 |
| Together AI | $0.15 | $0.60 |
| Fireworks AI | $0.15 | $0.60 |
| GCP Vertex AI | $0.09 | $0.36 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.04 |
| Output tokens | $0.17 |
Capabilities
JSON / Tool useStructured Outputs
About gpt-oss-120b
OpenAI open-weight model with 120 billion parameters. Text-only model supporting reasoning, function calling, and structured outputs. Free for self-hosting. Released August 5, 2025.
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Model Specs
Released2025-08-05
Parameters120B
Context128K
ArchitectureDecoder Only
Knowledge cutoff2025-08