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OpenAI: GPT-5.5 API Pricing
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
How much does OpenAI: GPT-5.5 cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: GPT-5.5 costs about $110 ($50 input + $60 output). Try your own volumes in the cost calculator.
What is the official OpenAI: GPT-5.5 price?
| Official (openai) | Catalog (OpenRouter) | |
|---|---|---|
| Input /1M | $5 | $5 |
| Output /1M | $30 | $30 |
| Cached input /1M | $0.5 | $0.5 |
✓ Matches the official list price. Source: openai official pricing page, checked 2026-10-21.
What are cheaper alternatives to OpenAI: GPT-5.5?
- OpenAI: GPT-6 Astra (batch) — $5 in / $25 out per 1M
- OpenAI: GPT-6 Astra Pro (batch) — $5 in / $25 out per 1M
- Anthropic: Claude Fable 5.1 (batch) — $5 in / $25 out per 1M
- Anthropic: Claude Opus 5 — $5 in / $25 out per 1M
- Anthropic: Claude Fable 5 (batch) — $5 in / $25 out per 1M
- Anthropic: Claude Opus 4.8 — $5 in / $25 out per 1M
Compare OpenAI: GPT-5.5 with other models
OpenAI: GPT-5.5 vs OpenAI: gpt-oss-20bOpenAI: GPT-5.5 vs OpenAI: gpt-oss-20b (batch)OpenAI: GPT-5.5 vs OpenAI: gpt-oss-120b (batch)OpenAI: GPT-5.5 vs OpenAI: GPT-5 Nano (batch)OpenAI: GPT-5.5 vs OpenAI: GPT-4.1 Nano (batch)OpenAI: GPT-5.5 vs OpenAI: GPT-6 Luna Pro (batch)
Frequently asked questions
How much does OpenAI: GPT-5.5 cost?
OpenAI: GPT-5.5 costs $5 per 1M input tokens and $30 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $110.
What is the context window of OpenAI: GPT-5.5?
OpenAI: GPT-5.5 has a context window of 1,050,000 tokens and can return up to 128,000 output tokens per response.
What are cheaper alternatives to OpenAI: GPT-5.5?
Cheaper models include OpenAI: GPT-6 Astra (batch) ($5 in / $25 out), OpenAI: GPT-6 Astra Pro (batch) ($5 in / $25 out), Anthropic: Claude Fable 5.1 (batch) ($5 in / $25 out). See the full list on this page.
Is OpenAI: GPT-5.5 free to use?
No. OpenAI: GPT-5.5 is a paid model at $5 input / $30 output per 1M tokens. 20 free models are listed on the free models page.
What is the official price of OpenAI: GPT-5.5?
On openai's official pricing page (checked 2026-10-21), OpenAI: GPT-5.5 is listed at $5 per 1M input tokens and $30 per 1M output tokens. The catalog price tracked on this page matches it exactly.
Provider: openai · Model ID: openai/gpt-5.5 · Modality: text+image+file->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices