The astronomy is exact and you can check it against any panchang. The interpretation is a tradition. Conflating them is how astrology sites oversell, so this page separates them.
"Is it accurate" collapses two things that deserve separate answers. One of them is arithmetic and can be checked. The other is a tradition of interpretation and cannot. Any page that answers only the flattering one is not worth reading.
The useful test is not whether a reading felt right. It is whether the numbers underneath it survive comparison. Take your kundli from here, take one from a panchang you trust, and compare the lagna degree, the Moon’s nakshatra and pada, and the dates your mahadasha changes. Those must match. If they do not, one of the two is wrong and you should stop reading the interpretation of either.
Where they legitimately differ is the ayanamsa: a chart cast with Raman or KP ayanamsa lands a degree or so from a Lahiri one. That is a stated setting, not an error — which is why every chart on this site prints the setting it used.
Two different questions are hiding in that one. The astronomical calculation — planetary positions, houses, dasha dates — is exact and independently checkable; CosmiqeAI uses the Swiss Ephemeris and its festival dates are verified against Drik Panchang. The interpretation of that chart is a traditional discipline, not a measurement, and no honest astrologer of any kind claims otherwise.
It can tell you exactly which dasha you are running and when it changes, because that is arithmetic. What that period will feel like is interpretation. Anyone promising certainty about the second thing is overselling, and this site does not.
It is only as good as the birth time. A few minutes moves the lagna, and with it every house. Where the time is unknown these pages say the lagna cannot be determined rather than assuming sunrise.
Pick a specialist, ask in your own words, and pay for the minutes you use. The rate is on screen before the first one.