# GPT-5.5

OpenAI, released 2026-04-23

**Verdict: recommended.** GPT-5.5 is OpenAI's April 2026 general-purpose model at $5 input and $30 output per 1M tokens, with a 1M+ token context (922K in, 128K out). It is no longer OpenAI's only deployable frontier option: the GPT-5.6 family is on the public price list, and GPT-6 Sol lists at $2/$10. It stays recommended as a stable, widely supported production baseline, but new workloads should test GPT-6 Sol or GPT-5.6 Terra first. Last verified 2026-07-07.

## Pricing

- Input: $5 / 1M tokens
- Output: $30 / 1M tokens
- Context: 1M+ tokens (922K in / 128K out)

## Strengths

- Existing OpenAI production workloads already validated on it: generally available with broad tooling, Responses and Chat Completions support, and image input
- Complex professional workloads needing strong reasoning and a 1M+ token context window (922K input)
- Teams already on the OpenAI ecosystem — broad tooling, Responses + Chat Completions API support, image input
- Pure price-performance on specific tasks — Gemini 3.5 Flash ties it on OSWorld at 1/3 the cost; GPT-5.6 Terra claims GPT-5.5-class perf at half price
- Very-long-context sessions — prompts over 272K input tokens are billed at 2x input / 1.5x output for the whole session
- New deployments chosen on price: GPT-6 Sol lists at $2 input / $10 output per 1M tokens short context, against GPT-5.5's $5 / $30

## Sources

- [Neomanex — Gemini 3.5 Flash Computer Use Ties GPT-5.5 at 1/3 Cost](https://utility.neomanex.com/news/gemini-35-flash-computer-use)
- [OpenAI API — GPT-5.5 model docs (1M+ context, 922K in / 128K out)](https://developers.openai.com/api/docs/models/gpt-5.5)
- [OpenAI API pricing](https://developers.openai.com/api/docs/pricing)
- [OpenAI — Introducing GPT-5.5](https://openai.com/index/introducing-gpt-5-5/)

Canonical: https://neomanex.com/models/gpt-5-5