OpenAI

San Francisco, USAFounded 2015
16 models

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

Text & ChatOpenAI
NewPopular

OpenAI's newest flagship model. Improved reasoning, instruction following, and coding over GPT-4o.

Free2.5s
popularcodingreasoning

GPT-4o

Text & ChatOpenAI
Popular

OpenAI's most capable multimodal model. Excellent for complex reasoning, coding, and creative tasks.

Free2.0s
popularfastmultimodal

GPT-5.4

MultimodalOpenAI
NewPopular

OpenAI's unified flagship combining GPT and o-series reasoning into one model. 1M context, multimodal, top SWE-Bench Pro and OSWorld scores.

Free
openaiflagshipreasoning

GPT-5.4 Mini

MultimodalOpenAI
NewPopular

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.

Free
openaibalancedcost-efficient

o3-mini

Text & ChatOpenAI
NewPopular

OpenAI's reasoning model optimized for STEM tasks, coding, and math. Uses chain-of-thought reasoning.

Free10.0s
reasoningcodingmath

OpenAI Sora 2

VideoOpenAI
Popular

OpenAI's second-generation Sora video model. Realistic motion, improved physics, audio support.

€0.50
openaisoratext-to-video

Sora

VideoOpenAI
NewPopular

OpenAI video generation model. Create realistic and imaginative videos from text prompts up to 20 seconds.

€1.00180.0s
popularhigh-qualityopenai

Text Embedding 3 Large

EmbeddingOpenAI
Popular

OpenAI's most powerful embedding model. 3072 dimensions for maximum accuracy.

Free600ms
high-quality

Whisper Large V3

STTOpenAI
Popular

OpenAI's Whisper model. State-of-the-art speech recognition supporting 99+ languages.

€0.305.0s
multilingualpopular

Whisper Large v3 Turbo

STTOpenAI
Popular

OpenAI's distilled Whisper Large v3. ~216x realtime, 99+ languages, MIT-licensed weights.

€0.006
openaiwhisperstt

DALL-E 3

ImageOpenAI

OpenAI's latest image generation model. Excellent at following complex prompts with high fidelity.

€4.0015.0s
high-qualityprompt-following

GPT-4o Mini

Text & ChatOpenAI

Small, fast, and affordable model for lightweight tasks. Great balance of speed and capability.

Free800ms
fastaffordable

GPT-5.4 Nano

MultimodalOpenAI
New

OpenAI's smallest and cheapest GPT-5.4 variant. Built for high-volume classification, extraction and coding subagents at edge-grade latency.

Free
openaicost-efficientlow-latency

OpenAI TTS-1

TTSOpenAI

OpenAI's text-to-speech model. Six built-in voices with natural intonation.

€0.602.0s
fastaffordable

OpenAI TTS-1 HD

TTSOpenAI

OpenAI's high-definition TTS model. Better quality for production use cases.

€1.204.0s
high-quality

Text Embedding 3 Small

EmbeddingOpenAI

OpenAI's compact embedding model. 1536 dimensions, great for semantic search and RAG.

Free500ms
affordablecompact

Frequently asked questions

How is OpenAI pricing handled on Railwail?
Railwail uses transparent per-call or per-token credit pricing for all OpenAI models. You pay only for what you use — no monthly minimums, no upfront commitments. Pricing for every individual OpenAI model is shown on its detail page.
Are there rate limits when using OpenAI via Railwail?
Default rate limits depend on your account tier and the underlying OpenAI capacity. Free-tier accounts get sensible defaults for development; paid accounts can request higher limits. Contact support if you need dedicated throughput or burst capacity.
Which regions does OpenAI support through Railwail?
OpenAI models are served from Railwail's globally distributed edge infrastructure. EU, US, and Asia-Pacific traffic is automatically routed to the nearest available provider region. GDPR-compliant EU-only routing is available on request.
Is there a sandbox or free tier to test OpenAI models?
Yes — every new Railwail account receives free credits that work across all providers, including OpenAI. No credit card is required to start. You can try every model in the catalog before committing to a paid plan.
Categories OpenAI works in

Start building with OpenAI today

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