GPT-5.5
GPT-5.5 is a reasoning model from OpenAI, released on 2026-04-23. It accepts text and image input and returns text output. The recorded context window is 1000K, and the recorded maximum output is 128K. Cataloged capabilities include Reasoning model and Multilingual. The model weights are proprietary and are not published for download. Use the linked references to confirm current access, licensing, and provider-specific limits.
Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology
| Type | Condition | Input | Output |
|---|---|---|---|
| Text | - | $5.00/ 1M tokens | $30.00/ 1M tokens |
| Type | Condition | Input | Output |
|---|---|---|---|
| Text | - | $2.50/ 1M tokens | $15.00/ 1M tokens |
| Type | Condition | Input | Output |
|---|---|---|---|
| Text | - | $12.50/ 1M tokens | $75.00/ 1M tokens |
| Type | TTL | Write | Read |
|---|---|---|---|
| Text | - | — | $0.500/ 1M tokens |
| Text | 5m | $6.25/ 1M tokens | $0.500/ 1M tokens |
| Text | 1h | $6.25/ 1M tokens | $0.500/ 1M tokens |
“—” means the modality is not billed in that direction, or the vendor has not published a price for it.
GPT-5.5 currently shows benchmark results led by LiveBench (1 / 117, score 79.91), Terminal Bench 2.0 (1 / 48, score 82.70), FrontierMath (2 / 60, score 51.70). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.
GPT-5.5 is a reasoning model from OpenAI, released on 2026-04-23.
It accepts text and image input and produces text output. Its cataloged capabilities include Reasoning model and Multilingual. The recorded context window is 1000K, and the recorded maximum output is 128K.
The model weights are proprietary and are not published for download. The page records 30 API pricing rules from OpenAI; current provider pricing and conditions should be checked before deployment. The evaluation section contains 28 cataloged benchmark results with their recorded modes and scores. The page links 3 release, model-card, repository, or provider references for checking the underlying claims. Specifications, availability, and prices can change; undisclosed values are intentionally left unstated.
GPT-5.5 is a reasoning model from OpenAI, released on 2026-04-23. It accepts text and image input and returns text output. The recorded context window is 1000K, and the recorded maximum output is 128K. Cataloged capabilities include Reasoning model and Multilingual. The model weights are proprietary and are not published for download. Use the linked references to confirm current access, licensing, and provider-specific limits.
The current model record lists text and image as input and text as output.
The recorded context window is 1000K, and the recorded maximum output is 128K. Fields without a source-backed value remain undisclosed.
The page records 30 API pricing rules from OpenAI; current provider pricing and conditions should be checked before deployment.
The evaluation section contains 28 cataloged benchmark results with their recorded modes and scores. Compare only results that use the same benchmark version and evaluation mode.
The model weights are proprietary and are not published for download. Review the linked license text before commercial or derivative use.
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