FRONTIER REASONING1M CONTEXTTEXT + VISIONPROMPT CACHINGBATCH -50%
GPT-5.5 API Pricing
OpenAI's flagship API model for complex reasoning and coding: $5/M input, $30/M output, and $0.50/M cached input in the standard short-context tier. OpenAI lists a separate long-context tier above 272K input tokens.
Input - per 1M tokens
$5.00/M
Short context up to 272K input standard
Output - per 1M tokens
$30.00/M
Long context output is $45/M standard
Cached input - 90% off
$0.50/M
Prompt cache hit price -90%
Effective - agentic blend
$3.61/M
92/8 split - 82% cache
§ 01 / TERMINAL
Run the numbers.
Live calculator pre-loaded with current GPT-5.5 standard short-context rates. For prompts above 272K input tokens, use the long-context tier shown in the FAQ.
$ /mo
Workload split
Prompt cache hit rate
Tokens you can process
—
Words equivalent (English)
—
Effective rate
—
§ 02 / SCENARIOS
Real-world presets.
CHATBOT
Executive workflow assistant
$0.018/turn
CODING AGENT
Repo-wide feature build
$0.517/task
LONG DOC ANALYSIS
Reading 150-page contracts
$0.554/doc
RESEARCH
Multi-step market brief
$0.199/brief
RAG - SUPPORT
Premium support ticket
$0.061/ticket
§ 03 / TAPE
Price history.
Input · $5/M
Output · $30/M
Cached · $0.50/M
APR 24 API availability at $5/M input and $30/M outputMAY 17 Verified unchanged on OpenAI pricing docs
§ 04 / TOKENIZER
Paste text. See tokens. See cost.
Estimate · tiktoken-o200k_base · ≈3.85 chars/token Auto-counts as you type
This is a chars-per-token approximation, not a real tokenizer. Actual tokens vary by language, code density, and tool-call overhead — counts are typically ±10–20% off for English prose, more for code or non-Latin scripts. For exact billing, use the vendor's official tokenizer.
Characters —
Words —
Tokens (estimated) —
Cost as input · uncached —
Cost as output · uncached —
Cost as cached input —
| Model | Input /M | Output /M | Effective blended | Context | Best for |
|---|---|---|---|---|---|
| GPT-5.5 Current | $5.00 cache $0.50 | $30.00 | $3.61 agentic 92/8 | 1M | Frontier coding and professional agents |
| GPT-5.4 | $2.50 cache $0.25 | $15.00 | $1.80 same blend | 1M | Cheaper GPT daily-driver work |
| GPT-5.4 mini | $0.75 cache $0.07 | $4.50 | $0.54 same blend | 400K | Lower-latency subagents |
| Claude Opus 4.7 | $5.00 cache $0.50 | $25.00 | $3.21 same input, cheaper output | 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 |
| DeepSeek V4 Flash | $0.14 cache $0.00 | $0.28 | $0.05 same blend | 1M | Bulk low-cost traffic |
Frequently asked.
Practical GPT-5.5 pricing questions, with OpenAI's published rates separated from workload assumptions.
Q · 01 What is the standard GPT-5.5 API price? +
OpenAI lists
gpt-5.5 at $5/M input tokens, $0.50/M cached input tokens, and $30/M output tokens in the standard short-context tier. This page stores the public list price in USD and marks the source as OpenAI's pricing docs.Q · 02 When does GPT-5.5 long-context pricing apply? +
OpenAI separates short-context and long-context pricing. For
gpt-5.5, the long-context tier applies above 272K input tokens and is listed at $10/M input, $1/M cached input, and $45/M output. The calculator on this page uses the standard short-context tier; use the long-context calculator link for requests above that threshold.Q · 03 How much cheaper are Batch and Flex? +
OpenAI lists Batch and Flex for
gpt-5.5 at half the standard short-context rate: $2.50/M input, $0.25/M cached input, and $15/M output. That makes offline jobs and latency-tolerant agent runs materially cheaper than standard synchronous calls.Q · 04 What does Priority processing cost? +
The Priority table lists
gpt-5.5 at $12.50/M input, $1.25/M cached input, and $75/M output. That is 2.5x the standard short-context list price, so reserve it for latency-sensitive production traffic rather than batch analysis.Q · 05 Does GPT-5.5 have regional pricing? +
Yes. OpenAI states that regional processing/data-residency endpoints carry a
10% uplift for gpt-5.5 and related GPT-5.4/5.5 models. Standard global routing uses the public standard rate.Q · 06 Is GPT-5.5 cheaper than GPT-5.4? +
No. GPT-5.4 is half the GPT-5.5 list price at
$2.50/M input, $0.25/M cached input, and $15/M output. In the shared 92/8 agentic blend with 82% cache hits, GPT-5.5 lands near $3.61/M while GPT-5.4 lands near $1.80/M.Q · 07 What release date is used here? +
OpenAI announced GPT-5.5 on April 23, 2026 and 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.Q · 08 How accurate is the tokenizer estimate? +
The live widget uses an estimated
4.875 characters per token for English text and labels the tokenizer as tiktoken-o200k_base. It is good for budget planning, but exact billing can differ by language, whitespace, code, tool calls, and image inputs.