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GPT-5.5 on Vidman AI

gpt-5.5

266K context125K max outputVisionTool callingCachingoptional reasoning

Pricing

₹ per 1M tokens · as of 16 October 2026
Input₹480
Output₹2,880
Cached input₹48

Flat rate: every request bills the same. Rupee prices convert at the platform exchange rate billing uses (₹96/USD today). Full catalog and comparisons on the pricing comparison page.

About this model

OpenAI's GPT-5.5 model for complex professional work and coding, with configurable reasoning.

Not sure? Vidman AI Adaptive routes to the best model per request, including this one.

Model specifications

API data
Modality
Multimodal
Context
2,72,000 tokens
Maximum output
1,28,000 tokens
Reasoning
Optional
Effort levels
low, medium, high, xhigh
Default effort
medium
Caching
Automatic
Cache minimum
None
Cache TTL
Provider managed
Route
Vidman AI managed

From the serverless catalog, fetched 16 October 2026.

Measured performance

API observations over 7d; not an SLA.

44 sampled requests
TTFT p50
1,500 ms
TTFT p95
3,000 ms
Throughput p50
100 tok/s
Throughput average
84.7 tok/s
Call it now: OpenAI-compatible
curl https://api.vidman.ai/v1/chat/completions \
  -H "x-api-key: $VIDMAN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.5",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'

Existing OpenAI SDK code works by changing the base URL to https://api.vidman.ai/v1 and the key.

Model card

GPT-5.5 is a flagship model for the most complex professional work. OpenAI describes it as a new class of intelligence for coding and professional work.

Model details

Property Value
Developer OpenAI
Model ID gpt-5.5
OpenAI default snapshot gpt-5.5-2026-04-23
Input Text, image
Output Text
Max output tokens 128,000
Knowledge cutoff Dec 01, 2025
Reasoning Yes

*Details above are from OpenAI's official model page.