OpenAI LLMs
Creator of the GPT family and the ChatGPT product. Pioneer of large-scale RLHF and reasoning-trained models.
OpenAI ships frontier models behind a unified Chat Completions / Responses API. Its strongest commercial advantage is the breadth of its model menu — GPT-4o for general tasks, GPT-4.1 for long-context coding, the o-series for reasoning, and embedding/Whisper/TTS endpoints alongside. Token costs vary widely across this menu, which is why a per-call calculator matters more here than for single-model providers.
Founded: 2015 · HQ: San Francisco, USA · Docs: platform.openai.com ↗
All OpenAI models
| Model | Family | Context | Input $/M | Output $/M | Released | Status |
|---|---|---|---|---|---|---|
| GPT-5 | GPT-5 | 400K | $1.25 | $10.00 | 2025-08-07 | active |
| GPT-5 Mini | GPT-5 | 400K | $0.25 | $2.00 | 2025-08-07 | active |
| GPT-5 Nano | GPT-5 | 400K | $0.05 | $0.40 | 2025-08-07 | active |
| o3 | o-series | 200K | $2.00 | $8.00 | 2025-04-16 | active |
| GPT-4.1 | GPT-4 | 1.0M | $2.00 | $8.00 | 2025-04-14 | active |
| o3-mini | o-series | 200K | $1.10 | $4.40 | 2025-01-31 | active |
| GPT-4o Mini | GPT-4 | 128K | $0.15 | $0.60 | 2024-07-18 | active |
| GPT-4o | GPT-4 | 128K | $2.50 | $10.00 | 2024-05-13 | active |
Comparisons with other providers
The most-searched comparisons involving OpenAI models:
- GPT-5 vs Codestral
- GPT-5 vs DeepSeek-V3
- GPT-5 Mini vs Codestral
- GPT-5 Mini vs DeepSeek-V3
- GPT-5 Nano vs Codestral
- GPT-5 Nano vs DeepSeek-V3
- o3 vs Codestral
- o3 vs DeepSeek-V3
- GPT-4.1 vs Codestral
- GPT-4.1 vs DeepSeek-V3
- o3-mini vs Codestral
- o3-mini vs DeepSeek-V3
- GPT-4o Mini vs Codestral
- GPT-4o Mini vs DeepSeek-V3
- GPT-4o vs Codestral
- GPT-4o vs DeepSeek-V3
Working with the OpenAI API
Documentation lives at https://platform.openai.com/docs. Before paying for any call, count input tokens with the appropriate counter:
- OpenAI Token Counter — for GPT-* and o-series models
- Claude Token Counter — for Anthropic Claude models
- Gemini Token Counter — for Google Gemini models