55 Longco
55 Longco is OpenAI's language model. An OpenAI model variant optimized for long-context processing and comprehension tasks.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
| Provider | Standard | Batch | ||
|---|---|---|---|---|
| Input $ / 1M | Cache Read $ / 1M | Input $ / 1M | Cache Read $ / 1M | |
 Azure AI Foundry | $10.00 | $1.00 | $5.00 | $0.500 |
Cost Calculator
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| 55 Longco | — | — | — | — | Current |
| 55 Shortco | — | — | — | — | Available |
| Image2Img | — | — | — | — | Available |
| Image2Txt | — | — | — | — | Available |