OpenAIVerified Active: September 4, 2026
GPT-5.5API Pricing & Specifications
OpenAI's frontier model combining deep reasoning and general multimodal intelligence.
📊 Core Specifications & Pricing Rates
Standard Input
$5.00 / 1M tokens
Standard Output
$30.00 / 1M tokens
Cached Input
$0.5000 / 1M tokens
Context Window
1M (1,048,576 tokens)
Max Output Tokens
16,384 tokens
Supported Capabilities:✓ Vision✓ Function Calling / Tools✓ JSON Mode✓ Deep Reasoning
📦 Asynchronous Batch API Supported: Official provider documentation offers a 50% discount on non-streaming 24h batch requests.
Live Workload Cost Estimator: GPT-5.5
Adjust token volumes to simulate your exact monthly API bill.
Estimated 60% repeated context
Estimated Total Monthly Cost
Compare All Models in Calculator→$386.25/ month
$0.01545 per API request(Saves $101.25/mo with caching)
💡 Estimated Monthly Workload Scenarios
Enterprise Agent Workflow
$560.00/mo10,000 complex multi-step reasoning steps (4,000 input, 1,200 output)
10,000 requests • 4000 in / 1200 out
⚖️ Head-to-Head Competitor Comparisons
GPT-5.5 vs. Claude Sonnet 4.6
GPT-5.5 supports 1M context (vs 200K) and 16k output tokens, but has higher per-token rates.
Higher output pricing ($30 vs $15)View Claude Sonnet 4.6 →
📜 Historical Price Changes & Updates
2026-06-30
GPT-5.5 production release with 1M context window and 90% prompt caching discount.
🔗 Verified Primary Sources
All pricing, token limits, and capabilities are cross-checked against official provider documentation and live API endpoints.