Test-time compute is an AI concept where the model spends more time thinking at inference (when answering a question) instead of just at training. Tech jargon. Not concerning. If your kid uses it constantly, ask them where they first heard it, not to police their speech but to understand which online community they are in. Most slang of this kind moves through TikTok and group chats, so seeing it in your child's vocabulary just means they are plugged into normal teen internet culture.
test-time compute
Using more compute at inference time — via longer chain-of-thought, sampling, or verification — to boost model quality without retraining.
test taɪm kəmˈpjuːtCoined ~20242020sGen Alphatrending309 viewsLast reviewed Jun 29, 2026＋ Add a definition
Etymology timeline
Born ~2024 · no dated citations yetSeen in the wild
Wikipedia: Feedback neural network
This reflection is a form of "test-time compute", where additional computational resources are used during inference.
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Wikipedia: Neural scaling law
Some models also exhibit performance gains by scaling inference through increased test-time compute (TTC), extending neural scaling laws beyond training to the deployment phase.
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Definitions
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#1·Apr 24, 2026Global
Using more compute at inference time — via longer chain-of-thought, sampling, or verification — to boost model quality without retraining. The OpenAI o1 + Claude extended-thinking paradigm. You pay seconds to gain accuracy.
"We're throwing more test-time compute at the eval. 3x latency, much better answers."
Origin: Tech / AI / developer industry term.
For parents
Test-time compute is an AI concept where the model spends more time thinking at inference (when answering a question) instead of just at training. Tech jargon. Not concerning. If your kid uses it constantly, ask them where they first heard it, not to police their speech but to understand which online community they are in. Most slang of this kind moves through TikTok and group chats, so seeing it in your child's vocabulary just means they are plugged into normal teen internet culture.
For ESL learners
Test-time compute is a 2024 AI-industry term meaning the computational resources used during inference, particularly when models engage in extended reasoning. Use in AI research and technical writing. Formal equivalent: "inference-time computation." Common non-native mistake: confusing with training-time compute. Test-time compute happens when answering queries, not during training. Read or listen to the word in context several times before trying it yourself; the right register is harder to learn than the dictionary meaning.
Cluster: ai_specific
Heard in the wild
“This reflection is a form of "test-time compute", where additional computational resources are used during inference.”
“Some models also exhibit performance gains by scaling inference through increased test-time compute (TTC), extending neural scaling laws beyond training to the deployment phase.”
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Global
#2·May 2, 2026Global
The amount of computational power or processing time required for an artificial intelligence system to generate a result or perform a task after it has already been trained.
Source: Wiktionary (CC BY-SA 4.0)
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Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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An LLM trained or configured to produce long chains of internal "thinking" tokens before answering — trading latency for higher accuracy on complex problems. OpenAI's o1 and Claude's extended thinking are examples.
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