GPT-5.5 Instant vs OpenAI: gpt-oss-120b (free)
Both have similar output pricing, while OpenAI: gpt-oss-120b (free) offers a larger context window. Choose GPT-5.5 Instant or OpenAI: gpt-oss-120b (free) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.5 Instant | OpenAI: gpt-oss-120b (free) |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | — | $0.00 |
| Output / 1M tokens | — | $0.00 |
| Context window | — | 131K |
| Parameters | — | — |
| Open weights | No | — |
| Released | May 2026 | — |
FAQ
Is GPT-5.5 Instant or OpenAI: gpt-oss-120b (free) cheaper?
GPT-5.5 Instant and OpenAI: gpt-oss-120b (free) have comparable output pricing.
Which has the larger context window, GPT-5.5 Instant or OpenAI: gpt-oss-120b (free)?
OpenAI: gpt-oss-120b (free) has the larger context window (131K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.