From
To
Date
Sun, Dec 18
12 found from BWN, DGR to TDL, AF, AGC, MTJ
| Train name and number | Starting station | Duration | Ending station | Classes | Train type | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
12311 - NETAJI EXPRESS Runs onMTWTFSS | 11:08 PM BWN Barddhaman | 17h 57m 1065 KM 38 stops | 05:05 PM TDL Tundla 30 KM from BHA | SL, 3A, 2A, 1A | Special Train | Starting from ₹1455 | |||||
12315 - ANANYA EXPRESS Runs onMTWTFSS | 02:39 PM BWN Barddhaman | 19h 6m 1083 KM 26 stops | 09:45 AM AF Agra 13 KM from BHA | SL, 3A, 2A, 1A | Special Train | Starting from ₹580 | |||||
20975 - HWH AGC EXPRESS Runs onMTWTFSS | 07:10 PM BWN Barddhaman | 23h 50m 1085 KM 34 stops | 07:00 PM AGC Agra 10 KM from BHA | SL, 3A, 2A | Special Train | Starting from ₹600 | |||||
12177 - CHAMBAL EXPRESS Runs onMTWTFSS | 07:10 PM BWN Barddhaman | 23h 25m 1085 KM 33 stops | 06:35 PM AGC Agra 10 KM from BHA | SL, 3A, 2A | Special Train | ||||||
12381 - POORVA EXPRESS Runs onMTWTFSS | 09:20 AM BWN Barddhaman | 17h 28m 1065 KM 25 stops | 02:48 AM TDL Tundla 30 KM from BHA | SL, 3A, 2A, 1A | Special Train | Starting from ₹555 | |||||
12303 - POORVA EXPRESS Runs onMTWTFSS | 09:08 AM BWN Barddhaman | 17h 40m 1065 KM 28 stops | 02:48 AM TDL Tundla 30 KM from BHA | SL, 3A, 2A, 1A | Special Train | Starting from ₹580 | |||||
12319 - KOAA AGC EXP Runs onMTWTFSS | 03:27 PM DGR Durgapur 62 KM from BWN | 17h 43m 1065 KM 12 stops | 09:10 AM MTJ Mathura 54 KM from BHA | SL, 3A, 2A, 1A | Special Train | Starting from ₹575 | |||||
12307 - HWH JU EXPRESS Runs onMTWTFSS | 12:34 AM BWN Barddhaman | 18h 46m 1083 KM 32 stops | 07:20 PM AF Agra 13 KM from BHA | SL, 3A, 2A, 1A | Special Train | Starting from ₹560 | |||||
12496 - PRATAP EXPRESS Runs onMTWTFSS | 12:04 AM BWN Barddhaman | 17h 56m 1083 KM 22 stops | 06:00 PM AF Agra 13 KM from BHA | SL, 3A, 2A | Special Train | Starting from ₹560 | |||||
12987 - SDAH AII SF EXP Runs onMTWTFSS | 12:21 AM BWN Barddhaman | 18h 19m 1083 KM 24 stops | 06:40 PM AF Agra 13 KM from BHA | SL, 3A, 2A | Special Train | Starting from ₹560 | |||||
22307 - HWH BKN EXPRESS Runs onMTWTFSS | 12:34 AM BWN Barddhaman | 18h 46m 1083 KM 35 stops | 07:20 PM AF Agra 13 KM from BHA | SL, 3A, 2A, 1A | Special Train | ||||||
13039 - Howrah Delhi Janta Express Runs onMTWTFSS | 10:21 PM BWN Barddhaman | 1d 7h 24m 1065 KM 119 stops | 05:45 AM TDL Tundla 30 KM from BHA | 2S, SL, CC, 3A, 2A, 1A | Janshatabdi | ||||||
12 found from BWN, DGR to TDL, AF, AGC
| Train name and number | Starting station | Duration | Ending station | Classes | Train type | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
02381 - HWH NDLS SPL Runs onMTWTFSS | 09:20 AM BWN Barddhaman | 17h 28m 1065 KM 22 stops | 02:48 AM TDL Tundla 30 KM from BHA | 2S, SL, 3A, 2A, 1A | Special Train | ||||||
02303 - HWH NDLS SPL Runs onMTWTFSS | 09:10 AM BWN Barddhaman | 17h 35m 1065 KM 21 stops | 02:45 AM TDL Tundla 30 KM from BHA | 2S, SL, 3A, 2A, 1A | Special Train | ||||||
02496 - KOAA BKN SPL Runs onMTWTFSS | 12:04 AM BWN Barddhaman | 17h 56m 1083 KM 21 stops | 06:00 PM AF Agra 13 KM from BHA | 2S, SL, 3A, 2A | Special Tatkal | ||||||
02311 - NETAJI EXP SPL Runs onMTWTFSS | 11:08 PM BWN Barddhaman | 17h 57m 1065 KM 38 stops | 05:05 PM TDL Tundla 30 KM from BHA | 2S, SL, 3A, 2A, 1A | Special Train | ||||||
02987 - Sdah Aii Sf Exp 12987 Train Runs onMTWTFSS | 12:21 AM BWN Barddhaman | 18h 14m 1083 KM 22 stops | 06:35 PM AF Agra 13 KM from BHA | Special Tatkal | |||||||
02387 - HWH BKN SPL Runs onMTWTFSS | 12:34 AM BWN Barddhaman | 18h 51m 1083 KM 29 stops | 07:25 PM AF Agra 13 KM from BHA | 2S, SL, 3A, 2A, 1A | Special Train | ||||||
02385 - HWH JU SPL Runs onMTWTFSS | 12:34 AM BWN Barddhaman | 18h 51m 1083 KM 26 stops | 07:25 PM AF Agra 13 KM from BHA | 2S, SL, 3A, 2A, 1A | Special Train | ||||||
02315 - KOAA UDZ SPL Runs onMTWTFSS | 02:39 PM BWN Barddhaman | 19h 6m 1083 KM 22 stops | 09:45 AM AF Agra 13 KM from BHA | 2S, SL, 3A, 2A, 1A | Special Train | ||||||
02319 - KOAA AGC SPL Runs onMTWTFSS | 03:29 PM DGR Durgapur 62 KM from BWN | 19h 11m 1022 KM 12 stops | 10:40 AM AGC Agra 10 KM from BHA | 2S, SL, 3A, 2A | Special Train | ||||||
03125 - KOAA AII SPECIAL Runs onMTWTFSS | 03:32 PM BWN Barddhaman | 21h 8m 1083 KM 27 stops | 12:40 PM AF Agra 13 KM from BHA | SL, 3A | Special Tatkal | ||||||
02177 - HWH MTJ SPL Runs onMTWTFSS | 07:10 PM BWN Barddhaman | 23h 25m 1085 KM 34 stops | 06:35 PM AGC Agra 10 KM from BHA | 2S, SL, 3A, 2A | Special Train | ||||||
04975 - HWH AGC SPL Runs onMTWTFSS | 07:10 PM BWN Barddhaman | 23h 50m 1085 KM 33 stops | 07:00 PM AGC Agra 10 KM from BHA | 2S, SL, 3A, 2A | Special Train | ||||||
2 found from BWN to TDL, AGC
| Train name and number | Starting station | Duration | Ending station | Classes | Train type | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
13111 - Lal Quila Express Runs onMTWTFSS | 10:03 PM BWN Barddhaman | 1d 42m 1065 KM 67 stops | 10:45 PM TDL Tundla 30 KM from BHA | 2S, SL, CC, 3A, 2A, 1A | Express | ||||||
13007 - U ABHATOOFAN EXP Runs onMTWTFSS | 11:40 AM BWN Barddhaman | 1d 3h 15m 1085 KM 112 stops | 02:55 PM AGC Agra 10 KM from BHA | SL, 3A | Others | ||||||
Trains from Bhandai to Barddhaman
| Train name and number | Starting station | Duration | Ending station | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
53053 - KWAE NILE PSG | 01:05 PM KWAE Katwa | 3h 25m 110 KM 19 stops | 04:30 PM NILE Nimtita | |||||||||
12338 - SANTINIKETN EXP | 01:10 PM BHP Bolpur | 2h 30m 136 KM 4 stops | 03:40 PM HWH Howrah | |||||||||
13421 - NDAE MLDT EXP | 05:00 AM NDAE Nabadwip | 4h 30m 181 KM 11 stops | 09:30 AM MLDT Malda | |||||||||
13431 - NDAE BLGT EXP | 05:00 AM NDAE Nabadwip | 6h 40m 208 KM 15 stops | 11:40 AM BLGT Balurghat | |||||||||
| Train name and number | Starting station | Duration | Ending station | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
53054 - NILE KWAE PGR | 07:22 AM GGLE Gangatikuri | 22 stops | 07:21 AM GGLE Gangatikuri | |||||||||
53175 - SDAH LGL PGR | 03:36 PM MGM Muragacha | 2h 49m 100 KM 35 stops | 06:25 PM LGL Lalgola | |||||||||
03183 - SDAH LGL PGR | 03:36 PM MGM Muragacha | 2h 39m 100 KM 35 stops | 06:15 PM LGL Lalgola | |||||||||
53181 - LALGOLA PASS | 02:27 AM MGM Muragacha | 2h 33m 100 KM 34 stops | 05:00 AM LGL Lalgola | |||||||||
03191 - SDAH LGL SPL | 02:28 AM MGM Muragacha | 2h 27m 100 KM 34 stops | 04:55 AM LGL Lalgola | |||||||||
| Train name and number | Starting station | Duration | Ending station | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
01910 - MNQ AGC DEMU SPL | 04:30 AM MNQ Mainpuri | 5h 10m 103 KM 21 stops | 09:40 AM AGC Agra | |||||||||
12161 - LASHKAR EXP | 04:25 PM LTT Mumbai | 22h 40m 1040 KM 19 stops | 03:05 PM AGC Agra | |||||||||
04184 - DLI-TDL MEMU MEX SPL | 03:15 PM PUNE Pune | 2h 50m 1064 KM 31 stops | 06:05 PM TDL Tundla | |||||||||
13167 - KOAA AGC EXPRES | 12:10 PM KOAA Kolkata | 1d 3h 40m 1165 KM 26 stops | 03:50 PM AGC Agra | |||||||||
14212 - INTERCITY EXP | 05:40 PM NDLS Delhi | 3h 50m 181 KM 18 stops | 09:30 PM AGC Agra | |||||||||
| Train name and number | Starting station | Duration | Ending station | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
05062 - TPU MTJ SPECIAL | 11:10 AM MRT Mathura | 12 stops | 11:08 AM MRT Mathura | |||||||||
13484 - FARAKKA EXP | 02:05 AM FZD Firozabad | 1d 4h 45m 1002 KM 66 stops | 06:50 AM MLDT Malda | |||||||||
13414 - FARKKA EXPRESS | 02:05 AM FZD Firozabad | 1d 4h 45m 1002 KM 62 stops | 06:50 AM MLDT Malda | |||||||||
19038 - AVADH EXPRESS | 07:32 AM RBS Rupbas | 20h 33m 1007 KM 82 stops | 04:05 AM BDTS Mumbai | |||||||||
15045 - GKP OKHA EXP | 06:02 PM MRA Morena | 1d 9h 32m 1009 KM 41 stops | 03:35 AM OKHA Okha | |||||||||
Barddhaman to Howrah Trains
Barddhaman to Jammu Trains
Barddhaman to Rampur Hat Trains
Barddhaman to Jalpaiguri Trains
Barddhaman to Kolkata Trains
Barddhaman to Delhi Trains
Barddhaman to Kalka Trains
Barddhaman to Barharwa Trains
Barddhaman to Asansol Trains
Barddhaman to Digha Trains
Barddhaman to Gaya Trains
Barddhaman to Pakur Trains
Barddhaman to Malda Trains
Barddhaman to Gonda Trains
Barddhaman to Bandel Trains
Barddhaman to Nawadah Trains
Barddhaman to Dumraon Trains
Barddhaman to Bolpur Trains
Barddhaman to Silchar Trains
Barddhaman to Durgapur Trains
Howrah to Barddhaman Trains
Kolkata to Barddhaman Trains
Delhi to Barddhaman Trains
Jalpaiguri to Barddhaman Trains
Varanasi to Barddhaman Trains
Indore to Barddhaman Trains
Digha to Barddhaman Trains
Jiradei to Barddhaman Trains
Rampur Hat to Barddhaman Trains
Suraimanpur to Barddhaman Trains
Fakiragram to Barddhaman Trains
Siliguri to Barddhaman Trains
Raxaul to Barddhaman Trains
Patna to Barddhaman Trains
Lucknow to Barddhaman Trains
Bongaigaon to Barddhaman Trains
Bettiah to Barddhaman Trains
Kalka to Barddhaman Trains
Ranchi to Barddhaman Trains
Jakhalabandha to Barddhaman Trains
Delhi to Bhandai Trains
Jaipur to Bhandai Trains
Lucknow to Bhandai Trains
Ahmedabad to Bhandai Trains
Chandigarh to Bhandai Trains
Kota to Bhandai Trains
Surat to Bhandai Trains
Ajmer to Bhandai Trains
Mumbai to Bhandai Trains
Haridwar to Bhandai Trains
Mathura to Bhandai Trains
Khajuraho to Bhandai Trains
Katra to Bhandai Trains
Kanpur to Bhandai Trains
Dehradun to Bhandai Trains
Mankapur to Bhandai Trains
Ludhiana to Bhandai Trains
Prayagraj to Bhandai Trains
Kolkata to Bhandai Trains
Jodhpur to Bhandai Trains
Parasnath to Bhandai Trains
Ambala to Bhandai Trains
Udaipur to Bhandai Trains
Faridabad to Bhandai Trains
Indore to Bhandai Trains
Bhubaneswar to Bhandai Trains
Agra to Bhandai Trains
Bangalore to Bhandai Trains
Hyderabad to Bhandai Trains
Howrah to Bhandai Trains
Aurangabad to Bhandai Trains
Kochi to Bhandai Trains
Chennai to Bhandai Trains
Gwalior to Bhandai Trains
Kopargaon to Bhandai Trains
Shoranur to Bhandai Trains
Pune to Bhandai Trains
Jabalpur to Bhandai Trains
Goneana to Bhandai Trains
Vadodara to Bhandai Trains
Bhandai to Delhi Trains
Bhandai to Jaipur Trains
Bhandai to Ujjain Trains
Bhandai to Chennai Trains
Bhandai to Ahmedabad Trains
Bhandai to Mumbai Trains
Bhandai to Madurai Trains
Bhandai to Kanpur Trains
Bhandai to Lucknow Trains
Bhandai to Jabalpur Trains
Bhandai to Agra Trains
Bhandai to Kannur Trains
Bhandai to Hyderabad Trains
Bhandai to Bangalore Trains
Bhandai to Bhopal Trains
Bhandai to Chhayapuri Trains
Bhandai to Indore Trains
Bhandai to Soron Trains
Bhandai to Kota Trains
Bhandai to Udaipur Trains
BWN, Barddhaman Junction
KMRA, Kamnara Railway Station
5 KM from BWNGRP, Gangpur Railway Station
6 KM from BWNTIT, Talit Railway Station
7 KM from BWNKJRA, Karjana Railway Station
10 KM from BWNSKG, Saktigarh Railway Station
11 KM from BWNKJRM, Karjanagram Railway Station
11 KM from BWNKAN, Khana Junction
13 KM from BWNARNB, Amarun Railway Station
13 KM from BWNPLAE, Palsit Railway Station
14 KM from BWNPRAE, Palla Road Railway Station
16 KM from BWNJTL, Jhapater Dhal Railway Station
16 KM from BWNSRBZ, Sehara Bazar Railway Station
16 KM from BWNGOR, Gopinathpur Railway Station
18 KM from BWNGSQ, Guir Saranga Railway Station
18 KM from BWNBTRH, Bhatar Railway Station
18 KM from BWNRSLR, Rasulpur Railway Station
18 KM from BWNBWCN, Bowaichandi Railway Station
19 KM from BWNRNGR, Rainagar Railway Station
20 KM from BWNMFCK, Mustapha Chak Railway Station
20 KM from BWNBPS, Banpas Railway Station
21 KM from BWNMSAE, Masagram Railway Station
21 KM from BWNGLI, Galsi Railway Station
22 KM from BWNSHJ, Sahaspur Road Railway Station
23 KM from BWNBGNA, Balgona Railway Station
24 KM from BWNNBAE, Nabagram Railway Station
24 KM from BWNMYM, Memari Railway Station
24 KM from BWNSHKL, Shankrul Railway Station
25 KM from BWNNRX, Noadar Dhal Railway Station
25 KM from BWNINS, Indas Railway Station
26 KM from BWNBGF, Bagila Railway Station
28 KM from BWNKMRL, Kumrul Railway Station
28 KM from BWNJRAE, Jaugram Railway Station
28 KM from BWNSOF, Saota Railway Station
28 KM from BWNPAJ, Paraj Railway Station
29 KM from BWNGKH, Guskara Railway Station
30 KM from BWNBTRB, Betur Railway Station
30 KM from BWNJPQ, Jhapandanga Railway Station
30 KM from BWNBHA, Bhandai Railway Station
AGC, Agra Cantt. Railway Station
10 KM from BHAPTLI, Pathauli Railway Station
10 KM from BHAIDH, Idgah Agra Junction
12 KM from BHABCP, Bichpuri Railway Station
13 KM from BHAMIQ, Mirhakur Railway Station
13 KM from BHAAF, Agra Fort Railway Station
13 KM from BHARKM, Raja Ki Mandi Railway Station
14 KM from BHAAGA, Agra City Railway Station
14 KM from BHABFP, Bilochpura Agra Railway Station
14 KM from BHAJJ, Jajau Railway Station
15 KM from BHAJAB, Yamuna Bridge Agra Railway Station
15 KM from BHASSDT, Shamshabad Town Railway Station
16 KM from BHARNKA, Runkuta Railway Station
18 KM from BHARAI, Raibha Railway Station
19 KM from BHAKLB, Kiraoli Railway Station
19 KM from BHACHLR, Chhalesar Railway Station
20 KM from BHADMSR, Dhimsiri Railway Station
23 KM from BHAKBP, Kuberpur Railway Station
23 KM from BHAAH, Achhnera Junction
24 KM from BHASNPR, Singarpur Railway Station
24 KM from BHAKXM, Kitham Railway Station
25 KM from BHAETUE, Etmadpur Railway Station
28 KM from BHAFTS, Fatehpur Sikri Railway Station
29 KM from BHAMIA, Mania Railway Station
29 KM from BHAKHSN, Khhera Sandhan Railway Station
30 KM from BHATDL, Tundla Junction
30 KM from BHALooking for Barddhaman to Bhandai trains? You can choose from a large number of trains running regularly on this route. Barddhaman to Bhandai trains is considered to be the most preferred and efficient mode of transportation for commuting between these two cities. There are frequent daily trains that run between these cities.On a weekly basis, there are 7 trains running between Barddhaman to Bhandai.To get accurate information regarding Barddhaman to Bhandai trains, Barddhaman Bhandai Railway Timetable, and Barddhaman to Bhandai Train Fare, you can visit the Goibibo app or website. You can also book train ticket online through Goibibo in a few steps. The user-friendly interface, easy booking process and attractive offers on train ticket booking help the travellers in booking their tickets at the most reasonable prices. You can also do tatkal train ticket booking for Barddhaman to Bhandai Trains through Goibibo.
Barddhaman to Bhandai train timings and fare are the two main factors that compel travellers to opt for Barddhaman to Bhandai Trains for a hassle-free journey. 12381 - POORVA EXPRESS is the fastest among the Barddhaman to Bhandai Trains. It departs from Barddhaman Junction(BWN) at 09:20 AM and arrives at Barddhaman Junction(TDL) at 02:48 AM, covering the distance in just 17 hrs 28 mins .While looking for an early morning train from Barddhaman to Bhandai, you can choose to travel via 12496 - PRATAP EXPRESS. It takes 17 hrs 56 mins to complete the journey, starting from Barddhaman Junction(BWN) at 12:04 AM and reaching Bhandai at 06:00 PM.
The first train from Barddhaman to Bhandai is 12496 - PRATAP EXPRESS departing at 12:04 AM from Barddhaman Junction(BWN).Some popular weekly trains on Barddhaman to Bhandai train route are 12311 - NETAJI EXPRESS, 12381 - POORVA EXPRESS, 12303 - POORVA EXPRESS. Every Friday 12311 - NETAJI EXPRESS departs from Barddhaman at 11:08 PM and arrives at Agra at 11:03 PM covering the entire distance in 17 hrs 57 mins .The boarding station for all Barddhaman to Bhandai trains are the Barddhaman Junction(BWN), Durgapur Railway Station(DGR) while deboarding at Bhandai can be at Tundla Junction(TDL), Agra Fort Railway Station(AF), Agra Cantt. Railway Station(AGC), Mathura Railway Station(MTJ).For all of the trains running on this route, you can check the live train running status, running history and PNR status on the Goibibo app and the website. Goibibo in collaboration with Indian railways also offers IRCTC registration and signup through its IRCTC Create User Id page. The stations are well-connected with the rest of the city with easy conveyance options. The Barddhaman to Bhandai train route witnesses regular rush of travellers. However, the large number of trains on this route provides direct and easy connectivity catering to the needs of all types of travellers.
Bhandai is one of the popular cities of India. There are plenty of amazing tourist spots in Bhandai that can make your journey memorable. You can book a Barddhaman to Bhandai Train and visit this gorgeous city with family and friends.
In order to explore the city’s places of interest, you can board the Barddhaman to Bhandai train. You can book your train from Barddhaman to Bhandai on Goibibo and enjoy a hassle-free trip. You can either make your bookings on Goibibo’s website or via the official app.
There are plenty of trains running on the Barddhaman to Bhandai route everyday, so the train seat availability is sufficient. You can board a train to Bhandai from the popular railway stations of your city and reach there within a short period of time. Moreover, you will face no problem in boarding any Barddhaman to Bhandai train, as the train journey is comfortable as well as secure.
Step 1: To book your Barddhaman to Bhandai trains, visit Goibibo.com.
Step 2: Enter your journey date, departure station, and arrival station. All the trains of that particular date will appear on your screen.
Step 3: Click on the seat class, and you’ll be redirected to another page where you can see the available coupons and cash rewards.
Step 4: Enter your personal details, click on ‘Continue’, and you’ll reach the payment part.
Step 5: Choose the payment option, make the payment, and the ticket confirmation will be sent to your E-Mail and mobile number.
Which trains are running from Barddhaman to Bhandai?
Total 24 trains runs from Barddhaman and Bhandai. Popular Trains that run from Barddhaman to Bhandai are 12311 - NETAJI EXPRESS, 12315 - ANANYA EXPRESS, 20975 - HWH AGC EXPRESS, 12177 - CHAMBAL EXPRESS, 12381 - POORVA EXPRESS. Book Now
How many Covid Special trains are currently running from Barddhaman to Bhandai?
24 Covid Special trains are currently running from Barddhaman to Bhandai. Book Now
Which is the fastest train from Barddhaman to Bhandai?
Fastest train from Barddhaman to Bhandai is 12381 - POORVA EXPRESS which takes 17 hrs 28 mins to reach Bhandai. Book Train Tickets
When does the first Barddhaman to Bhandai train leave?
The first train from Barddhaman to Bhandai is 12496 - PRATAP EXPRESS with departure at 12:04 AM from Barddhaman Junction(BWN). Book Now
Which is the last train to Barddhaman from Bhandai ?
12311 - NETAJI EXPRESS is the last train between Barddhaman from Bhandai with departure at 11:08 PM from Barddhaman Junction(BWN). Book Now
What is the travel distance and travel time from Barddhaman to Bhandai?
The approximate travel distance from Barddhaman to Bhandai is 1065 KM and minimum travel time is 17 hrs 28 mins .
From which all stations in Barddhaman we can board trains to Bhandai?
Stations in Barddhaman where we can board trains to Bhandai are the Barddhaman Junction(BWN), Durgapur Railway Station(DGR). Book Now
How to get the latest online information about my booking from Barddhaman to Bhandai Trains?
If you are travelling from Barddhaman to Bhandai, you can check PNR STATUS for latest tickets information can be checked through Goibibo train app or Goibibo website.
How to book tatkal tickets from Barddhaman to Bhandai?
You can book TATKAL TICKETS ONLINE, Booking starts from one day prior to the date of journey, from Barddhaman to Bhandai