OpenAI
API access to GPT, o-series reasoning, DALL-E, and Whisper models
OpenAI provides API access to a broad range of AI models. The current lineup includes GPT-4.1 and GPT-5 for general-purpose text generation, o3 and o4-mini for reasoning-heavy tasks, GPT-4.1-nano for cost-efficient workloads, DALL-E for image generation, and Whisper for speech recognition. Models support function calling, structured outputs, and vision input. Batch API available at 50% discount for async processing.
Pricing: Per token usage
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