OpenAI
OpenAI develops GPT-4o, Sora, DALL-E 3, Whisper, and the o1 reasoning family — the most widely-adopted commercial AI models on the market.
16 models from OpenAI on Railwail
Access every OpenAI model through Railwail's OpenAI-compatible API.
16 models available
GPT-4.1
OpenAI's newest flagship model. Improved reasoning, instruction following, and coding over GPT-4o.
GPT-4o
OpenAI's most capable multimodal model. Excellent for complex reasoning, coding, and creative tasks.
GPT-5.4
OpenAI's unified flagship combining GPT and o-series reasoning into one model. 1M context, multimodal, top SWE-Bench Pro and OSWorld scores.
GPT-5.4 Mini
OpenAI's efficient mid-tier model. 2x faster than its predecessor, 400k context, approaches GPT-5.4 quality on SWE-Bench Pro at a fraction of the cost.
o3-mini
OpenAI's reasoning model optimized for STEM tasks, coding, and math. Uses chain-of-thought reasoning.
OpenAI Sora 2
OpenAI's second-generation Sora video model. Realistic motion, improved physics, audio support.
Sora
OpenAI video generation model. Create realistic and imaginative videos from text prompts up to 20 seconds.
Text Embedding 3 Large
OpenAI's most powerful embedding model. 3072 dimensions for maximum accuracy.
Whisper Large V3
OpenAI's Whisper model. State-of-the-art speech recognition supporting 99+ languages.
Whisper Large v3 Turbo
OpenAI's distilled Whisper Large v3. ~216x realtime, 99+ languages, MIT-licensed weights.
DALL-E 3
OpenAI's latest image generation model. Excellent at following complex prompts with high fidelity.
GPT-4o Mini
Small, fast, and affordable model for lightweight tasks. Great balance of speed and capability.
GPT-5.4 Nano
OpenAI's smallest and cheapest GPT-5.4 variant. Built for high-volume classification, extraction and coding subagents at edge-grade latency.
OpenAI TTS-1
OpenAI's text-to-speech model. Six built-in voices with natural intonation.
OpenAI TTS-1 HD
OpenAI's high-definition TTS model. Better quality for production use cases.
Text Embedding 3 Small
OpenAI's compact embedding model. 1536 dimensions, great for semantic search and RAG.
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