GPT 5.5 Pro

Use ai gpt 5.5 pro for blazingly fast reasoning and coding. This pro model cuts token waste and solves complex logic better than previous gpt versions. An ai built for speed and scientific thinking available via our unified api.

Modalities

Context

API Usage Examples

curl --request POST "https://gptproto.com/v1/chat/completions" \
  --header "Authorization: Bearer $GPTPROTO_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "gpt-5.5-pro",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

GPT 5.5 Pro pricing

Estimate a request with real work scenarios. GPTProto token pricing is 20% below official rates.

UsageQuantityRateCost

Input tokens

tokens

$24/1M$0.0288

Output tokens

tokens

$144/1M$0.0576

Cost per request$0.0864

Requests

Top-up amount

Top-up $100 and you get:

1. Top-up credits with permanent validity. You will receive a total of $100.00.

2. Additional 20% model discount, saving $24.9559 versus direct official OpenAI API calls.

Related Models

All Models

Model					Input → Output
GPT 5.5 ProCurrent		1.05M	$24.00 / $144.00 per 1M	—	Input: TextInput: ImageInput: Document Output: Text
GLM 5.3 Flash	—	—	$0.15 / $0.50 per 1M	— / $0.03 per 1M	Input: TextInput: ImageInput: VideoInput: Document Output: Text
DeepSeek v4 Flash Vision Exp	—	—	$0.44 / $1.32 per 1M	— / $0.01 per 1M	Input: TextInput: Image Output: Text
GLM 5.3		1.05M	$1.26 / $3.96 per 1M	— / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.7 Flash		1.05M	$0.45 / $2.25 per 1M	— / $0.04 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.6		500K	$1.20 / $3.60 per 1M	— / $0.30 per 1M	Input: TextInput: Image Output: Text
Qwen3.8 Max		1M	$1.80 / $5.40 per 1M	$2.25 / $0.23 per 1M	Input: TextInput: ImageInput: VideoInput: Document Output: Text
Claude Opus 5		1M	$4.50 / $22.50 per 1M	$5.63 / $0.45 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.6 Flash		1.05M	$0.45 / $2.25 per 1M	— / $0.04 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.5 Flash Lite		1.05M	$0.18 / $1.50 per 1M	$0.02 / $0.02 per 1M	Input: TextInput: ImageInput: Document Output: Text
Kimi K3		1.05M	$2.70 / $13.50 per 1M	$0.27 / $0.27 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Luna		1.05M	$0.16 / $0.96 per 1M	$0.20 / $0.02 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Terra		1.05M	$1.60 / $9.60 per 1M	$2.00 / $0.16 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Sol		1.05M	$4.00 / $24.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.5		500K	$1.20 / $3.60 per 1M	$0.30 / $0.30 per 1M	Input: TextInput: Image Output: Text
Claude Sonnet 5		1M	$1.80 / $9.00 per 1M	$2.25 / $0.18 per 1M	Input: TextInput: Document Output: Text
MiniMax M3		1.05M	$0.48 / $0.96 per 1M	$0.10 / $0.10 per 1M	Input: TextInput: ImageInput: Document Output: Text
GLM 5.2		1.05M	$1.26 / $3.96 per 1M	$0.23 / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.1 Chat Latest		—	$1.00 / $8.00 per 1M	$0.10 / $0.10 per 1M	Input: TextInput: ImageInput: Document Output: Text
Claude Fable 5		1M	$9.00 / $45.00 per 1M	$11.25 / $0.90 per 1M	Input: TextInput: Document Output: Text
Qwen3.7 Max		1M	$0.36 / $1.44 per 1M	$0.07 / $0.07 per 1M	Input: TextInput: Document Output: Text
DeepSeek v4 Flash	—	1.05M	$0.44 / $1.32 per 1M	— / $0.01 per 1M	Input: Text Output: Text
DeepSeek v4 Pro	—	1.05M	$1.32 / $3.96 per 1M	— / $0.04 per 1M	Input: Text Output: Text
Grok 4.3		1M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
GPT 5.4 Pro		1.05M	$24.00 / $144.00 per 1M	—	Input: TextInput: ImageInput: Document Output: Text
GPT 5.5		1.05M	$4.00 / $24.00 per 1M	$0.40 / $0.40 per 1M	Input: TextInput: ImageInput: Document Output: Text
Kimi K2.6		262K	$0.85 / $3.60 per 1M	$0.14 / $0.14 per 1M	Input: TextInput: Document Output: Text
MiniMax M2.5		205K	$0.24 / $0.96 per 1M	$0.30 / $0.02 per 1M	Input: TextInput: Document Output: Text
Kimi K2.5		262K	$0.54 / $2.70 per 1M	$0.09 / $0.09 per 1M	Input: TextInput: Document Output: Text
Qwen Turbo		—	$0.04 / $0.18 per 1M	$0.009 / $0.009 per 1M	Input: Text Output: Text
Doubao Seed 1.6 Thinking (Build 250715)		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Thinking (Build 250615)		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Flash (Build 250615)		262K	$0.02 / $0.18 per 1M	—	Input: TextInput: Image Output: Text

Key ai gpt 5.5 pro Features

Discover why the ai gpt 5.5 pro model is the preferred choice for high-performance computing and pro development.

Blazing Fast ai Logic

Experience the speed of gpt 5.5 pro. This ai processes complex reasoning tasks significantly faster than 5.4, making it ideal for real-time applications.

Pro Codex Integration

The ai gpt 5.5 pro shines in development. It maintains coherence for longer periods within coding environments, solving bugs in a single pass.

Superior Token Economy

Though priced as a pro model, this ai uses roughly 1/5 the tokens of its predecessors. Efficiency means spending less on debugging and prompts.

Deep Reasoning ai

This ai thinks like a scientist. It handles nuanced problem-solving with a level of expertise that sets gpt 5.5 pro apart from competitors.

ai gpt 5.5 pro FAQ

Get answers about the ai gpt 5.5 pro model, focusing on speed, token efficiency, and coding performance for pro users.

How fast is ai gpt 5.5 pro compared to 5.4?

The ai gpt 5.5 pro is significantly faster. Users describe the speed as 'blazingly fast,' noting it handles complex reasoning in seconds. While 5.4 was a solid step up from 5.2, the 5.5 pro version prioritizes immediate response times, making it the most efficient ai tool for real-time workflows. You will notice the difference immediately when running heavy logic or scientific simulations.

Is ai gpt 5.5 pro better for coding?

Yes, this ai is highly optimized for code. When using gpt 5.5 pro with development tools, it maintains coherence over longer periods. Many developers find it solves problems that previously required multiple chat turns. It is particularly effective at debugging because it uses fewer tokens to reach a solution, saving both time and money during intense coding sessions.

Does ai gpt 5.5 pro use more tokens?

Actually, gpt 5.5 pro is more efficient. While the request cost is higher, this ai typically uses only a fraction of the tokens (about 1/5) that older models consume for the same task. By generating more accurate code and logic on the first try, the ai reduces the need for follow-up prompts, which helps balance out the premium pricing for pro users.

What are the limits for ai gpt 5.5 pro?

Limits depend on your plan. High-intensity tasks like extended thinking can hit quotas faster due to the pro model's depth. However, because this ai is so efficient, you often accomplish more per request. We recommend monitoring your usage via the GPTProto.com dashboard to ensure your ai projects remain within your tiered limits.

Why choose ai gpt 5.5 pro over Gemini?

Reliability is the main factor. Many professionals prefer this ai because it consistently outperforms Gemini in coding and logical consistency. The gpt 5.5 pro model feels more like a 'real scientist,' providing dependable results where other models might hallucinate. It is currently the top-tier ai for those who cannot afford errors.

Can ai gpt 5.5 pro handle long codebases?

Yes, the ai gpt 5.5 pro manages long-form technical content exceptionally well. It remains coherent across large files, making it a strong alternative to Claude. If you are working on a massive pro project, this ai is designed to track context accurately, ensuring that your logic stays sound from the first line of code to the last.

Guides, comparisons, and updates related to this model.

All Articles

GPT 5.5 Benchmark: Is the Cost Worth It?

Explore the latest gpt 5.5 benchmark results. Compare coding performance and pricing to see if the increased efficiency justifies the $30 output cost.

gpt 5.5 Leaks: Omnimodality and High Costs

Explore gpt 5.5 rumors including natively omnimodal architecture and pricing. Prepare your engineering workflow for the next era of AI today.

gpt6: Beyond the Marketing Hallucinations

gpt6 is about more than just speed. We look at why reliability and memory are the real benchmarks that matter for the next model. Read the full guide.

GPT-5.4 Is Here: Everything You Need to Know

GPT-5.4 is OpenAI's latest AI model, combining advanced reasoning, coding, and built-in Computer Use in one. Learn what's new, how it compares to GPT-5.2, and how to access it affordably via GPT Proto.