Last refreshed 2026-06-15. Next refresh: weekly.
Why use gpt-oss-120b on Together AI?
Together AI offers gpt-oss-120b with pay-as-you-go pricing at $0.15/1M input tokens. Together AI is a platform for running open-source and proprietary LLMs with fast serverless and dedicated endpoints at competitive inference pricing.
Compare gpt-oss-120b across 13 providers to find the best fit for your use caseInput / 1M
$0.15
Output / 1M
$0.60
Cache
Not sourced
Batch
Not sourced
Setup recipe
Python + curlInstall
pip install togetherAuth
export TOGETHER_API_KEY=...Call
from together import Together
client = Together() # reads TOGETHER_API_KEY from env
response = client.chat.completions.create(
model="openai/gpt-oss-120b",Model ID
openai/gpt-oss-120bRequest example
from together import Together
client = Together() # reads TOGETHER_API_KEY from env
response = client.chat.completions.create(
model="openai/gpt-oss-120b",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use provider model ID "openai/gpt-oss-120b", not the LLMReference slug "gpt-oss-120b".
- Together uses "organization/model-name" format, e.g. "meta-llama/Llama-4-Scout-17B-16E-Instruct" or "Qwen/QwQ-32B". See the Together model catalog for the exact ID.
- The examples expect TOGETHER_API_KEY; rename it only if your application config maps the new variable.
Compare gpt-oss-120b Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Cloudflare Workers AI | $0.35 | $0.75 |
| OpenRouter | $0.04 | $0.18 |
| 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 | $0.15 |
| Output tokens | $0.60 |
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.
Get Started
Model Specs
Released2025-08-05
Parameters120B
Context131k
ArchitectureDecoder Only
Knowledge cutoff2025-08