GPT-5.6 Sol API and credit pricing cut by over 20%Claude Security now scans GitHub repos with Mythos 5 Zero Data Retention continues with Private Safety Processing preview for stronger safety Claude can now send Gmail emails and manage Google Drive files Strengthen monitoring for high-risk training and pause RL runs Approved defenders can advance advanced vulnerability research with GPT-5.6-Cyber Cyclone forecasts now provide over a day of extra lead time Talk while reasoning or using tools without conversation breaks AI delivers new results on 10 long-standing math problems with proofs released GPT-5.6 Luna and Terra prices drop 80% and 20%, with faster Sol option added Opus 5 now available on all paid plans and API Securely link health records to understand symptom changes and test results in context Run code inside notes for deeper analysis GPT-Red boosts prompt injection resistance significantly Cut lesson prep time with AI You can move from conversation to documents faster Run AI inference in the browser and cut wait time Review how you use Claude and cut waste Long tasks can move from draft to presentation more easily Track the latest safety rules for bigger models GPT-5.6 Sol API and credit pricing cut by over 20%Claude Security now scans GitHub repos with Mythos 5 Zero Data Retention continues with Private Safety Processing preview for stronger safety Claude can now send Gmail emails and manage Google Drive files Strengthen monitoring for high-risk training and pause RL runs Approved defenders can advance advanced vulnerability research with GPT-5.6-Cyber Cyclone forecasts now provide over a day of extra lead time Talk while reasoning or using tools without conversation breaks AI delivers new results on 10 long-standing math problems with proofs released GPT-5.6 Luna and Terra prices drop 80% and 20%, with faster Sol option added Opus 5 now available on all paid plans and API Securely link health records to understand symptom changes and test results in context Run code inside notes for deeper analysis GPT-Red boosts prompt injection resistance significantly Cut lesson prep time with AI You can move from conversation to documents faster Run AI inference in the browser and cut wait time Review how you use Claude and cut waste Long tasks can move from draft to presentation more easily Track the latest safety rules for bigger models

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OpenAI Details How to Use Prompt Caching Effectively

Repeat instructions faster and cheaper with effective prompt caching.

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Official Docs

Key Points

1Exact prefix match is required for cache hits
2Place fixed instructions/examples at the prompt start
3Effectiveness depends on prompt structure

OpenAI's guide explains how to maximize Prompt Caching benefits by structuring prompts with fixed prefix parts (instructions or examples) to improve cache hits, reducing latency and cost. This technique is most effective for applications like chatbots sending repeated preambles. Frequent reformatting can reduce its effectiveness due to the exact match requirement.

Key point

OpenAI's guide explains how to maximize Prompt Caching benefits by structuring prompts with fixed prefix parts (instructions or examples) to improve cache hits, reducing latency and cost. This technique is most effective for applications like chatbots sending repeated preambles. Frequent reformatting can reduce its effectiveness due to the exact match requirement.

Impact

Repeat instructions faster and cheaper with effective prompt caching. Key checks: Exact prefix match is required for cache hits / Place fixed instructions/examples at the prompt start / Effectiveness depends on prompt structure.