new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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openai/model ids & availability

7 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

OpenAI reasoning models: o1, o3, o4 series

OpenAI has introduced reasoning models in o1, o3, and o4 series. Currently o4-mini, o3, o3-mini, and o1 are available via both chat and responses APIs. Model gpt-5.1-codex-mini is available only via the responses API. Reasoning models only generate text, have several limitations, and are only supported using generateText and streamText.

OpenAI model capabilities table

OpenAI chat model capabilities: gpt-5.6, gpt-5.6-luna, gpt-5.6-sol, gpt-5.6-terra, gpt-5.5, gpt-5.4-pro, gpt-5.4, gpt-5.4-mini, gpt-5.4-nano, gpt-5.3-chat-latest, gpt-5.2-pro, gpt-5.2-chat-latest, gpt-5.2, gpt-5.1-codex-mini, gpt-5.1-codex, gpt-5.1-chat-latest, gpt-5.1, gpt-5-pro, gpt-5, gpt-5-mini, gpt-5-nano, gpt-5-codex, gpt-4.1, gpt-4.1-mini, gpt-4.1-nano, gpt-4o, gpt-4o-mini support Image Input and Object Generation and Tool Usage. gpt-5-chat-latest supports Image Input only. All models listed do not support Audio Input. Note: gpt-5-chat-latest does not support Object Generation or Tool Usage.

OpenAI embedding model capabilities

OpenAI embedding model capabilities: text-embedding-3-large has default dimensions 3072 with custom dimensions support; text-embedding-3-small has default dimensions 1536 with custom dimensions support; text-embedding-ada-002 has default dimensions 1536 without custom dimensions support.

OpenAI image model sizes and capabilities

OpenAI image model size capabilities: gpt-image-2, gpt-image-1.5, gpt-image-1-mini, gpt-image-1 support 1024x1024, 1536x1024, 1024x1536; dall-e-3 supports 1024x1024, 1792x1024, 1024x1792; dall-e-2 supports 256x256, 512x512, 1024x1024.

OpenAI transcription model capabilities

OpenAI transcription model capabilities: whisper-1 supports transcription, duration, segments, language; gpt-4o-mini-transcribe and gpt-4o-transcribe support transcription only; gpt-realtime-whisper supports streaming only.

OpenAI translation model capabilities

OpenAI gpt-realtime-translate model supports: translated audio, translated text, source transcript.

OpenAI speech model capabilities

OpenAI speech model capabilities: tts-1 and tts-1-hd support instructions; gpt-4o-mini-tts supports instructions.

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