Home/Models/GPT-5.5
OpenAIOpenAI
Multimodal500K tokens

GPT-5.5

API Model ID:gpt-5.5

Frontier multimodal foundation model balancing complex reasoning with cost.

#Multimodal#Vision#Audio#Reasoning#Versatile
Context Window500K tokens500,000 tokens
Max Output48K tokens48,000 tokens
Input Price$2.00per 1M input tokens
Output Price$8.00per 1M output tokens
Latency / Speed~110ms125 tokens/sec

Overview & Architecture

GPT-5.5 represents the balanced multimodal backbone of modern AI stacks. Combining broad multi-discipline knowledge, multimodal audio and vision inputs, and steady reasoning, GPT-5.5 is suitable for applications that demand both high analytical rigor and reasonable per-token expenditure.

ArchitectureUnified Omni-Modal Dense Transformer
Knowledge IndexCurrent (Continuously Indexed)

Benchmark Highlights

MMLU-Pro88.2%

General academic problem solving

MMMU74.6%

Multi-discipline multimodal reasoning

SWE-bench Lite54.1%

Software patch generation

Supported Capabilities

Function Calling / Tools
Supported
Vision & Image Inputs
Supported
Audio & Voice Inputs
Supported
Structured JSON Mode
Supported
System Prompts
Supported
Streaming Completions
Supported
Prompt Caching
Supported

Engineering Strengths

  • Consistent, versatile performance across text, image, and audio modalities
  • Dependable tool use and JSON Schema structuring
  • Cost-efficient alternative to top-tier reasoning engines
  • Strong cross-lingual translation and localization accuracy

Recommended Production Workloads

  • Multimodal document extraction and visual UI auditing
  • General customer service assistants and automated support workflows
  • Content generation, summarization, and interactive learning

Execute via Gruvo

Unified Endpoint

Connect through Gruvo with OpenAI-compatible client libraries. Gruvo translates requests, manages provider streaming, and applies caching automatically.

import OpenAI from "openai";

// Configure client with Gruvo's unified AI gateway
const gruvo = new OpenAI({
  baseURL: "https://api.gruvo.ai/v1",
  apiKey: process.env.GRUVO_API_KEY,
  defaultHeaders: {
    "X-Gruvo-Provider": "openai",
  },
});

const completion = await gruvo.chat.completions.create({
  model: "gpt-5.5",
  messages: [
    { role: "system", content: "You are a production reasoning assistant." },
    { role: "user", content: "Analyze the architecture of our service." },
  ],
  temperature: 0.2,
});

console.log(completion.choices[0].message.content);

Automatic Failover & Routing

If OpenAI suffers an unexpected outage or rate limit (HTTP 429), Gruvo can automatically route in-flight requests to equivalent tier models:

claude-sonnet-4.5View fallback specs →

Gruvo Execution Layer

  • Real-time per-token latency and error observability
  • Unified spend tracking and budget caps
  • Bring your own provider API keys or use pooled keys
Start Free on Gruvo