Model comparison
GPT-6 Astra vs gpt-oss-120b (free)
Compare published model capabilities and API prices.
OpenAI
GPT-6 Astra
GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creatio
OpenAI
gpt-oss-120b (free)
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. I
| Metric | GPT-6 Astra | gpt-oss-120b (free) |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context window | 1,050,000 | 131,072 |
| Input $/Mtok | $10.00 | $0 |
| Output $/Mtok | $50.00 | $0 |
| Modalities | text, vision | text |
| License | unknown | open-weights |
Quick take
On input price, gpt-oss-120b (free) is cheaper at $0/Mtok. For context window, GPT-6 Astra leads with 1,050,000 tokens.
Pick based on your workload: high-volume cheap inference vs long-document / agent loops. Enterprise DNA can wire either model into Omni with evals, secrets, and job orchestration.