GPT-5.5 (batch)
ModelActiveby OpenAI · family “gpt-batch”
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token... (description from the OpenRouter listing)
in: filein: imagein: textout: textReasoningTool useStructured output
Epoch Capabilities Index
Not scored by Epoch AI
Released
24 Apr 2026
Context window
1.05M tokens
Max output
128K tokens
Input $ / 1M tokens
$2.50
Output $ / 1M tokens
$15.0
Cached input $ / 1M
$0.25
Each benchmark shown separately with its own source
Benchmark results (0)
No benchmark results recorded for this model.
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
2 observations (OpenRouter listing + Internet Archive snapshots). History accumulates with every ingest run; a single point means no change has been observed yet.
Events
- Model launch5mo agoOpenAI releases GPT-5.5 (batch)OpenRouter models API