PRO REASONING1.05M CONTEXTTEXT + VISIONNO CACHE DISCOUNTBATCH -50%
GPT-5.5 Pro API Pricing
OpenAI's higher-accuracy Pro tier for harder questions: $30/M input and $180/M output in the standard short-context tier. OpenAI's pricing table does not list a cached-input discount for gpt-5.5-pro; pulled directly from developers.openai.com.
Input - per 1M tokens
$30.00/M
Short context up to 272K input standard
Output - per 1M tokens
$180.00/M
Long context output is $270/M standard
Cached input - not listed
$30.00/M
No discount shown by OpenAI N/A
Effective - agentic blend
$42.00/M
92/8 split - no cache discount
§ 01 / TERMINAL
Run the numbers.
Live calculator pre-loaded with current GPT-5.5 Pro standard short-context rates. Because OpenAI does not list cached-input pricing for this Pro row, cache toggles do not reduce the input rate.
$ /mo
Workload split
Prompt cache hit rate
Tokens you can process
—
Words equivalent (English)
—
Effective rate
—
§ 02 / SCENARIOS
Real-world presets.
EXPERT ANSWER
Hard question deep solve
$1.47/answer
RESEARCH AGENT
Scientific literature review
$5.40/report
LEGAL REVIEW
Merger-risk contract memo
$9.30/memo
DATA SCIENCE
Gene-expression analysis
$9.90/analysis
BOARD BRIEF
Executive decision memo
$0.600/brief
§ 03 / TOKENIZER
Paste text. See tokens. See cost.
Exact · o200k_base Auto-counts as you type
Counted with the o200k_base BPE encoding — the same tokenizer the API uses — entirely in your browser. The encoder loads on your first keystroke (~1 MB, one time); your text never leaves this page.
Characters 553
Words 87
Tokens (exact) 134 tokens
Cost as input · uncached $0.004020 USD
Cost as output · uncached $0.024120 USD
Cost as cached input $0.004020 USD
| Model | Input /M | Output /M | Effective blended | Context | Best for |
|---|---|---|---|---|---|
| GPT-5.5 Pro Current | $30.00 | $180 | $42.00 no cache discount | 1.05M | Hardest OpenAI reasoning |
| GPT-5.4 Pro | $30.00 | $180 | $42.00 same list price | 1.05M | Prior Pro tier |
| GPT-5.5 | $5.00 cache $0.50 | $30.00 | $3.61 cached blend | 1M | Frontier coding agents |
| GPT-5.4 | $2.50 cache $0.25 | $15.00 | $1.80 cached blend | 1M | Cheaper GPT daily-driver work |
| Claude Opus 4.7 | $5.00 cache $0.50 | $25.00 | $3.21 cached blend | 1M | Anthropic frontier reasoning |
| Gemini 2.5 Pro | $1.25 cache $0.13 | $10.00 | $1.10 tier 1 pricing | 2M | Large multimodal context |
| DeepSeek V4 Pro | $0.43 cache $0.00 | $0.87 | $0.14 promo price | 1M | Low-cost reasoning workloads |
Frequently asked.
Practical GPT-5.5 Pro pricing questions, with OpenAI's published rates separated from workload assumptions.
Q · 01 What is the standard GPT-5.5 Pro API price? +
OpenAI lists
gpt-5.5-pro at $30/M input tokens and $180/M output tokens in the standard short-context tier. The cached-input column is shown as -, so this page does not model a cache discount for GPT-5.5 Pro.Q · 02 When does GPT-5.5 Pro long-context pricing apply? +
The pricing table separates short-context and long-context tiers. For
gpt-5.5-pro, prompts above 272K input tokens are listed at $60/M input and $270/M output. The embedded calculator uses the standard short-context tier unless you open a long-context variant.Q · 03 Does GPT-5.5 Pro support prompt caching? +
OpenAI's pricing table does not list a cached-input price for
gpt-5.5-pro; the cached-input cell is -. For pricing math, AI//COST treats cached input as billed at the normal input rate. That keeps the effective-cost tile conservative instead of inventing a discount.Q · 04 How much cheaper are Batch and Flex? +
OpenAI lists Batch and Flex for
gpt-5.5-pro at $15/M input and $90/M output, which is half the standard short-context rate. The long-context columns for Batch and Flex are not listed for GPT-5.5 Pro on the pricing page.Q · 05 Is Priority pricing available for GPT-5.5 Pro? +
The Priority table shown on OpenAI's pricing page lists
gpt-5.5, gpt-5.4, and gpt-5.4-mini; it does not list gpt-5.5-pro. This page therefore does not publish a Priority rate for GPT-5.5 Pro.Q · 06 How much more expensive is GPT-5.5 Pro than GPT-5.5? +
On list price, GPT-5.5 Pro is 6x the GPT-5.5 input price and 6x the output price:
$30/$180 versus $5/$30. Under the shared 92/8 agentic blend, GPT-5.5 Pro is about $42/M while GPT-5.5 is about $3.61/M, mostly because GPT-5.5 has cached-input pricing and Pro does not.Q · 07 Does GPT-5.5 Pro have regional pricing? +
Yes. OpenAI says regional processing/data-residency endpoints carry a
10% uplift for gpt-5.5-pro and related GPT-5.5/GPT-5.4 models. Standard global routing uses the public standard rate.Q · 08 What release date is used here? +
OpenAI announced GPT-5.5 on April 23, 2026, then updated the release note on April 24, 2026 to say GPT-5.5 and GPT-5.5 Pro were available in the API. This page uses
2026-04-24 as the API release date.