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...
46 providers
Model catalog
Models
Every model in the catalog with source-linked pricing, context limits, provider availability, and published benchmark results.
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
42 providers
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
18 providers
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...
19 providers
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...
17 providers
| Model | Creator | Score | Inputs | Context | Input | Output | Released | Compare |
|---|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.5openai/gpt-5.5 | OpenAI |
84.9 | 1.05M | $5 | $30 | 2026-04-23 | ||
| OpenAI: GPT-5.4openai/gpt-5.4 | OpenAI |
83.0 | 1.05M | $2.5 | $15 | 2026-03-05 | ||
| OpenAI: GPT-5.5 Proopenai/gpt-5.5-pro | OpenAI |
82.3 | 1.05M | $30 | $180 | 2026-04-23 | ||
| OpenAI: GPT-5.4 Proopenai/gpt-5.4-pro | OpenAI |
82.0 | 1.05M | $30 | $180 | 2026-03-05 | ||
| StepFun: Step 3.7 Flashstepfun/step-3.7-flash | StepFun |
45.8 | 256K | $0.2 | $1.15 | 2026-05-29 |