There is no single best Discord translation bot, and any page that answers with one name before asking about your server is selling something. What actually decides it: who pays (the server or each member), what the free tier really gives you, and whether you need more than text translation. Pigona is one of the nine compared here, and every non-Pigona figure links to a full comparison sourced from that bot's own public site.
The most generous free tier that still runs full AI translation - 750 translations every day, forever, no card: Pigona. Images, PDFs, video, audio or live voice channels: BabelBot. A personal translator that follows you across every server: Talksy. Voice text-to-speech/speech-to-text or the largest language count: iTranslator. Maximum language coverage via Google and DeepL with no free tier needed: RitaBot. Paying once instead of monthly with a fixed character budget: NVU's Discord Translator or TranslateBot. The lowest paid entry price for machine translation only: JakeBot. An uncapped free tier or bringing your own OpenAI key: HephBot.
Pigona - per server, credit-metered from free through Business; free tier is 150 credits/day (up to 750 translations a day, forever, no card); Smart Context Engine on every tier including free. Pricing details.
BabelBot - per server, flat tiers or a one-time lifetime plan; free tier is 100 trial AI translations then 50/month, falling back to an unnamed engine after that; context-aware AI on Pro and above. Pigona vs BabelBot.
Talksy - per user, with one Pro admin unlocking server-wide routing and glossary; free tier is 250 translations/month, resettable by voting on Top.gg. Pigona vs Talksy.
iTranslator - per server, tiered Free/Premium/Pro AI; free tier is 10,000 characters and 30 languages with no AI; context-aware AI only on the €29.99/month Pro AI tier. Pigona vs iTranslator.
RitaBot - per server, no free tier at all, priced by a task formula; cheapest paid tier is $2.99/month; 166+ languages via Google Translate and DeepL. Pigona vs RitaBot.
NVU's Discord Translator - one-time character pack, no subscription; free trial is 100 messages / 5,000 characters, one time only. Pigona vs Discord Translator (NVU).
JakeBot - per server, tiered; free tier is 6,000 characters/month; plain machine translation on every tier, no AI. Pigona vs JakeBot.
HephBot - per user or per server, admin's choice; free tier is fully unlimited core machine translation with no caps; AI is Premium only (from $1.99/month), with a bring-your-own-key option. Pigona vs HephBot.
TranslateBot - one-time character packs, no subscription; $0 Demo tier is 15,000 characters, one time only. Pigona vs TranslateBot.
Ahead on: Smart Context Engine running on every tier including free, where several bots here gate context-aware AI behind a paid tier or skip it entirely; four distinct delivery mechanisms for controlling channel noise instead of one fixed style; per-server billing that covers every member under one plan; and being the only bot in this list with both Intelligent Summarization and a server-level Analytics Hub.
Behind on: media translation (PDFs, images, video, audio), which BabelBot supports from its Pro tier up - Pigona is text only. Live voice channel translation, which BabelBot and iTranslator both offer on their top tiers - nothing in a Discord call is translated by Pigona. Bring-your-own-key, which HephBot offers and Pigona does not. And a smaller install base than several longer-established bots on this list, which means fewer independent reviews to check a vendor's claims against - including ours.
Every non-Pigona figure is restated from a full, individually sourced comparison linked above. Bot pricing and feature sets change - check the named bot's own site before budgeting against these numbers. From Pigona - the context-aware AI translation bot for Discord.