{"summary":"US inflation for 2026-08: headline CPI 3.3%, core CPI 2.47%, core PCE 3.34% year over year. Over the last year food and energy accounted for 1.3 percentage points of it.","source":{"name":"Helious","url":"https://helious.io/inflation","cite_as":"Helious, https://helious.io/inflation","attribution":"Please credit Helious and link the url above when you use this.","live":"Request this endpoint at any time for the newest numbers your plan allows. Your plan serves the news feed 60 minutes behind; a paid Helious plan serves it live."},"data":{"as_of":"2026-09-01T17:58:05+00:00","latest_month":"2026-08","target":{"pct":2.0,"basis":"the yearly change in headline PCE, over the longer run"},"windows":{"yoy":"year over year","a3":"3-month annualised","a6":"6-month annualised","a1":"1-month annualised"},"measures":[{"key":"headline_cpi","name":"Headline CPI","group":"headline","what_it_is":"Everything a normal household buys: food, rent, fuel, haircuts.","yoy":3.3,"month":"2026-07","a3":0.49,"a6":3.85,"a1":0.89},{"key":"headline_pce","name":"Headline PCE","group":"headline","what_it_is":"A wider measure than CPI. This is the one the Fed's 2 percent goal is set on.","yoy":3.7,"month":"2026-07","a3":2.2,"a6":4.13,"a1":1.89},{"key":"core_cpi","name":"Core CPI","group":"core","what_it_is":"The same list with food and energy taken out, because those two jump around.","yoy":2.47,"month":"2026-07","a3":1.64,"a6":2.42,"a1":2.62},{"key":"core_pce","name":"Core PCE","group":"core","what_it_is":"The Fed's measure with food and energy taken out. The number it leans on most.","yoy":3.34,"month":"2026-07","a3":3.05,"a6":3.46,"a1":2.99},{"key":"supercore_cpi","name":"Supercore CPI","group":"core","what_it_is":"Services like haircuts and repairs, with housing and energy taken out. No official version exists, so we build it.","note":"a Helious calculation, not an official published measure: the weighted residual of two broader CPI aggregates, chained from 2012-03","yoy":2.61,"month":"2026-07","a3":2.13,"a6":2.76,"a1":4.34},{"key":"supercore_pce","name":"Supercore PCE","group":"core","what_it_is":"The same idea, measured on the Fed's wider list. This one is official.","yoy":3.92,"month":"2026-07","a3":4.25,"a6":3.65,"a1":3.62},{"key":"core_services_cpi","name":"Core services CPI","group":"core","what_it_is":"Everything people do for you rather than sell you, minus household energy.","yoy":3.0,"month":"2026-07","a3":2.24,"a6":3.14,"a1":2.77},{"key":"core_goods_cpi","name":"Core goods CPI","group":"core","what_it_is":"Physical things you buy, minus food and energy.","yoy":0.78,"month":"2026-07","a3":-0.01,"a6":0.44,"a1":2.4},{"key":"services_less_rent","name":"CPI services less rent of shelter","group":"core","what_it_is":"Services with anything housing-related taken out.","yoy":2.99,"month":"2026-07","a3":2.28,"a6":3.17,"a1":2.32},{"key":"median_cpi","name":"Median CPI","group":"trim","what_it_is":"The one price change sitting exactly in the middle. One wild category cannot shift it.","yoy":2.69,"month":"2026-07","a3":2.96,"a6":3.02,"a1":3.12},{"key":"trimmed_cpi","name":"16% trimmed-mean CPI","group":"trim","what_it_is":"Crosses off the biggest risers and the biggest fallers, then averages the rest.","yoy":2.6,"month":"2026-07","a3":2.0,"a6":2.71,"a1":2.71},{"key":"trimmed_pce","name":"Trimmed-mean PCE","group":"trim","what_it_is":"The same idea, applied to the Fed's wider list.","note":"monthly change de-annualised from the published annual rate","yoy":2.28,"month":"2026-07","a3":2.19,"a6":2.35,"a1":2.21},{"key":"sticky_core_cpi","name":"Sticky-price core CPI","group":"trim","what_it_is":"Only the prices that change slowly, like insurance. These say more about what comes next.","yoy":2.72,"month":"2026-07","a3":2.33,"a6":2.76,"a1":3.47},{"key":"flexible_core_cpi","name":"Flexible-price core CPI","group":"trim","what_it_is":"Only the prices that change fast, like petrol. Jumpy by design.","yoy":1.09,"month":"2026-07","a3":-2.41,"a6":0.7,"a1":-2.24},{"key":"sticky_ex_shelter","name":"Sticky CPI less food, energy and shelter","group":"trim","what_it_is":"Close to supercore in spirit, and it goes back much further.","yoy":2.23,"month":"2026-07","a3":1.44,"a6":1.86,"a1":3.86},{"key":"shelter","name":"Shelter","group":"component","what_it_is":"Rent, plus what owners would pay to rent their own home.","yoy":3.16,"month":"2026-07","a3":2.32,"a6":3.41,"a1":1.68},{"key":"oer","name":"Owners' equivalent rent","group":"component","what_it_is":"What a homeowner would pay to rent their own place. The biggest single item, and the slowest to move.","yoy":3.23,"month":"2026-07","a3":3.23,"a6":3.74,"a1":3.16},{"key":"rent","name":"Rent","group":"component","what_it_is":"What renters actually pay, including people part-way through a lease.","yoy":2.86,"month":"2026-07","a3":3.11,"a6":3.32,"a1":3.11},{"key":"food_home","name":"Groceries","group":"component","what_it_is":"Groceries.","yoy":2.61,"month":"2026-07","a3":0.73,"a6":2.3,"a1":-0.86},{"key":"food_away","name":"Eating out","group":"component","what_it_is":"Restaurants and takeaway.","yoy":3.4,"month":"2026-07","a3":3.41,"a6":3.3,"a1":3.78},{"key":"energy_comm","name":"Petrol and heating oil","group":"component","what_it_is":"Petrol and heating oil.","yoy":24.71,"month":"2026-07","a3":-22.7,"a6":47.64,"a1":-29.89},{"key":"energy_svc","name":"Gas and electricity","group":"component","what_it_is":"Electricity and piped gas.","yoy":4.26,"month":"2026-07","a3":-0.33,"a6":4.31,"a1":3.15},{"key":"gasoline","name":"Gasoline","group":"component","what_it_is":"The price most people notice first.","yoy":24.64,"month":"2026-07","a3":-22.21,"a6":46.42,"a1":-29.36},{"key":"electricity","name":"Electricity","group":"component","what_it_is":"Your electricity bill.","yoy":4.2,"month":"2026-07","a3":-1.14,"a6":3.94,"a1":1.59},{"key":"new_vehicles","name":"New cars","group":"component","what_it_is":"The price of a brand new car.","yoy":0.54,"month":"2026-07","a3":-0.81,"a6":-0.43,"a1":0.94},{"key":"used_vehicles","name":"Second-hand cars","group":"component","what_it_is":"The item that drove the 2021 price spike.","yoy":-1.87,"month":"2026-07","a3":1.08,"a6":-1.06,"a1":4.88},{"key":"apparel","name":"Clothes and shoes","group":"component","what_it_is":"Clothing, footwear and the like.","yoy":3.87,"month":"2026-07","a3":-0.69,"a6":5.67,"a1":1.07},{"key":"medical_services","name":"Medical care","group":"component","what_it_is":"Doctors, dentists, hospitals and health insurance.","yoy":2.65,"month":"2026-07","a3":3.9,"a6":3.2,"a1":6.89},{"key":"transport_services","name":"Getting around","group":"component","what_it_is":"Car repairs, insurance, and fares.","yoy":2.9,"month":"2026-07","a3":-2.55,"a6":1.07,"a1":3.45},{"key":"airline_fares","name":"Plane tickets","group":"component","what_it_is":"A tiny slice of spending that swings wildly.","yoy":25.55,"month":"2026-07","a3":22.44,"a6":26.68,"a1":30.16},{"key":"mv_insurance","name":"Car insurance","group":"component","what_it_is":"A small item that rose sharply for several years.","yoy":-4.46,"month":"2026-07","a3":-14.85,"a6":-8.13,"a1":-3.41},{"key":"services_all","name":"All services","group":"component","what_it_is":"Everything people do for you rather than sell you.","yoy":3.07,"month":"2026-07","a3":2.11,"a6":3.2,"a1":2.79},{"key":"commodities_all","name":"All goods","group":"component","what_it_is":"Every physical thing you buy, food and fuel included.","yoy":3.72,"month":"2026-07","a3":-2.15,"a6":5.17,"a1":-2.22},{"key":"clev_exp1y","name":"Expected inflation, 1 year","group":"expect","what_it_is":"A forecast of what inflation will be over the next year.","yoy":2.39,"month":"2026-08","a3":2.39,"a6":2.39,"a1":2.39},{"key":"clev_exp10y","name":"Expected inflation, 10 years","group":"expect","what_it_is":"The same forecast, but looking ten years out.","yoy":2.49,"month":"2026-08","a3":2.49,"a6":2.49,"a1":2.49},{"key":"be_5y","name":"5-year breakeven","group":"expect","what_it_is":"What investors are betting inflation will average over the next five years.","yoy":2.26,"month":"2026-08","a3":2.26,"a6":2.26,"a1":2.26},{"key":"be_10y","name":"10-year breakeven","group":"expect","what_it_is":"The same bet, over ten years instead of five.","yoy":2.29,"month":"2026-08","a3":2.29,"a6":2.29,"a1":2.29},{"key":"be_5y5y","name":"5-year, 5-year forward","group":"expect","what_it_is":"What investors expect for the five years starting five years from now. The Fed watches this one.","yoy":2.31,"month":"2026-08","a3":2.31,"a6":2.31,"a1":2.31}],"driving":{"over_months":12,"month":"2026-07","parts":[{"part":"Housing","percentage_points":1.121},{"part":"Services, not housing","percentage_points":0.7},{"part":"Goods","percentage_points":0.1501},{"part":"Food and energy","percentage_points":1.3328}]}},"meta":{"tier":"keyless","history_days":1,"delay_sec":3600,"docs":"https://helious.io/.well-known/openapi-public.json","market_data":"none over REST (market prices start on a paid plan; the delayed /v1/stream snapshot is included on every plan)","upgrade_url":"https://helious.io/pricing","upgrade_note":"You are on the 1-day sample tier with no market prices. A free account key gets 7 days; paid plans open the market data (Starter $14.99/12mo with the delayed Treasury curve, Pro $39.99/24mo everything live). GET /v1/access has the steps to relay to your user.","as_of":"2026-09-01T17:58:05+00:00"}}