The claim is mostly true because the official Pokémon GO announcement says trainers worldwide can receive free Timed Research leading to a special Mewtwo, although they must log in, complete the research, and claim the encounter within the event period.
Pokémon GO’s 10th-anniversary celebration allows every trainer to claim a special Mewtwo.
Every Trainer can celebrate 10 years of Pokémon GO with a special Mewtwo!
Source: pokemongo.com
Key Evidence
The official Pokémon GO announcement says trainers worldwide receive free Timed Research leading to a Mewtwo with maxed-out stats and a Special Background.
Scopely repeats this description, while Pokémon GO Hub and Leek Duck report the reward as a guaranteed 100% IV Mewtwo.
Multiple sources also distinguish the worldwide offer from the separate Times Square event rewards.
What the Evidence Shows
The official Pokémon GO announcement and Scopely’s announcement state that trainers around the world can access free Timed Research during the 10th-anniversary celebration. Completing that research leads to an encounter with a Mewtwo possessing maxed-out, or perfect, stats and a Special Background.
The wording “every trainer can claim” is broadly supported, but it simplifies the eligibility and redemption requirements. Trainers must log in, complete the Timed Research, and claim the reward before the stated deadline. Pokémon GO Hub and Leek Duck identify the celebration as beginning August 12, 2026, while the supplied DittoBase summary reports a September 6, 2026, 11:59 p.m. local-time deadline.
The reward is not necessarily identical for every participant. The supplied sources indicate that attendees at the in-person Times Square event receive different rewards and a Mewtwo with different stats. Therefore, “every trainer” applies primarily to the worldwide Timed Research offer, not to one completely uniform reward package for all trainers.