GPT-5.5 pricing (retired)
Retired model. OpenAI has superseded GPT-5.5 — the prices below are the last ones we verified and are kept for reference. Its replacement is GPT-5.6 Sol ($4 / $20 per 1M in / out).
What one task cost on GPT-5.5
Per-million-token prices are hard to feel, so here are typical token counts for common jobs priced with GPT-5.5. Figures are USD at the rates above and exclude prompt caching and batch discounts.
| Task | Tokens (in / out) | Cost |
|---|---|---|
| Code review of a 500-line pull request | 60,000 / 4,000 | $0.420 |
| Debug one failing test | 40,000 / 6,000 | $0.380 |
| Generate a landing page in one shot | 3,000 / 30,000 | $0.915 |
| Draft a 1,200-word article | 2,000 / 2,500 | $0.085 |
| Answer a question from a 20-page document | 25,000 / 800 | $0.149 |
| Multi-step agent run (10 tool calls) | 250,000 / 25,000 | $2.00 |
| All of the above, once | $3.95 |
GPT-5.5 by OpenAI costs $5 per 1M input tokens and $30 per 1M output tokens — about 42.1k tokens per $1. Prices last verified 2026-09-19 (historical).
GPT-5.5 key facts
| Provider | ChatGPT pricing |
|---|---|
| Input price | $5 / 1M tokens |
| Output price | $30 / 1M tokens |
| Tokens / $1 | 42.1k |
| Intelligence / $1 | 16,421 |
| Context window | 1.1M tokens |
| Tier | frontier |
| Intelligence index | 39 / 100 |
| Released | 2026-04-23 |
| Last verified | 2026-09-19 |
What GPT-5.5 delivers for your budget
For a coding workload, here is roughly what each monthly budget buys:
| Budget | Tokens / month | Months of workload |
|---|---|---|
| $20 | 1.9M | 2.9x |
| $50 | 4.6M | 7.1x |
| $100 | 9.3M | 14.3x |
Other ChatGPT models
How GPT-5.5 compares to its closest rivals
Rather than repeating the full catalog on every page, here are the three current models nearest to GPT-5.5 on the intelligence index — and why you might still pick one instead:
- Gemini 3.7 Flash (Gemini) — $0.75 input / $3.75 output per 1M tokens. Why you might pick it: Frontier-adjacent index at Flash price.
- GPT-5.6 Luna (ChatGPT) — $0.20 input / $1.20 output per 1M tokens. Why you might pick it: ChatGPT quality at a budget price.
- Claude Sonnet 5 (Claude) — $2 input / $10 output per 1M tokens. Why you might pick it: Strong coding at mid-tier price.
GPT-5.5 — frequently asked questions
How much does GPT-5.5 cost?
GPT-5.5 by OpenAI costs $5 per 1M input tokens and $30 per 1M output tokens.
How many tokens per dollar does GPT-5.5 give you?
On a typical 1:3 input-to-output mix, GPT-5.5 delivers around 42.1k tokens per dollar — an intelligence-per-dollar score of 16421.
What is GPT-5.5's context window?
GPT-5.5 supports a context window of 1.1M tokens.
Is GPT-5.5 worth it in 2026?
GPT-5.5 is ChatGPT's frontier tier model. Use the AI Intelligence Calculator to see how its value compares to every other model at your budget.