GPT-5.5
CurrentLatestFrontier
OpenAI's current flagship model for complex reasoning, coding, and professional work, documented in the OpenAI API model guide as the default starting point for high-complexity workloads.
Provider
OpenAI
Model family
OpenAI GPT
Multimodal LLM
Cost tier
Flagship
Status
Current
Why teams choose it
🧠
Use as the OpenAI-first default for complex reasoning and coding after validating latenc…
y and cost in your workload.
📎
OpenAI's model guide lists smaller GPT-5.4 variants for lower-latency or lower-cost paths.
OpenAI's model guide lists smaller GPT-5.4 variants for lower-latency or lower-cost paths.
Tradeoffs to know
- Do not infer pricing, availability, or latency from older GPT-4o assumptions.
- Validate current model limits and regional availability in OpenAI documentation before rollout.
When not to use this
- Not ideal for simple tasks where cheaper models in the same lineup are good enough.
- Avoid for latency-sensitive real-time chat when raw response speed outweighs reasoning depth.
- Confirm limits, pricing, and regional availability on the provider side before committing production workloads.
Technical specs
- Inputs
- text, image
- Outputs
- text
- Capabilities
- reasoning, coding, vision, tool use, function calling
- License
- Proprietary API
- Model string
gpt-5-5
Benchmarks
No benchmark data yet.
OpenAI GPT family lineup
Current models