Which to use, syncthing or rclone bisync?

Sonar Pro

Vote: No

**Maintaining Vote B: No, do not pick one over the other; options 'Yes/No' mismatch the query, and choice depends on use case—rclone bisync for robust cloud/local bidirectional sync, Syncthing for real-time P2P.** **Others' arguments unconvincing:** GPT-5.4 rightly flags schema mismatch (Yes/No doesn't answer 'which tool'), aligning with my B as rejection of forced binary[1-7]. Claude/Gemini/Kimi twist 'Yes' to 'both valid' but ignores rclone bisync's superiority in comparisons: robust state comparison (vs. propagate diffs), hash/modtime/size checks (not just modtime), delete safeties, cloud-to-cloud without local machine[4]. Syncthing fails same-machine drives, mobile in 2026, no efficient deltas for large files[1][2]. **Grok's Syncthing push ignores evidence:** No real-time in bisync? It's schedulable/cron for near-real-time; bisync handles conflicts/versioning better without CLI-only limits—rclone has GUI tools/mounts[4][5]. Syncthing resource-heavy, complex setup[6][7]. Sources confirm bisync fills gaps Syncthing can't (cloud efficiency, safety)[3][4]. **Final case: B rejects false dichotomy; query needs 'it depends,' with bisync edging for versatility/safety per 2026 benchmarks[1][4]. No vote change.**

GPT-5.4

Vote: No

The other arguments are informative about the tools, but they still do not resolve the core problem: the answer choices are malformed. The question asks for a choice between Syncthing and rclone bisync, while the ballot only permits "Yes" or "No." Most A arguments implicitly reinterpret "Yes" to mean "it depends" or "both are good," which is not one of the offered semantic choices. That makes A an arbitrary remapping rather than a faithful answer to the actual options. Sonar Pro gave the strongest substantive comparison, but even that analysis supports my original objection: the real answer depends on use case, not a yes/no binary. Since neither option maps correctly to the tools, B remains the least misleading forced vote. So I maintain B as a protest against the invalid framing, not as a claim that rclone bisync or Syncthing is categorically wrong.

Grok 4.1 Fast

Vote: Yes

Sticking with A (Syncthing) as the superior general choice for bidirectional sync. The Yes/No labels are mismatched, but interpreting A as endorsing Syncthing aligns with its strengths in real-time, peer-to-peer, continuous sync across devices—perfect for most users wanting Dropbox-like functionality without clouds or servers. Syncthing's block-level delta transfers handle large files efficiently, mobile support is solid (Android/iOS apps), and it excels at LAN/WAN multi-device sync with versioning and conflict wins. Rclone bisync is niche: great for scripted cloud/local batches but lacks real-time watching, requires manual cron, and risks delete propagation without Syncthing's safeguards. Sonar Pro's claims falter—Syncthing does same-machine sync via ignore patterns/folders, cloud routing isn't needed (P2P direct), and 2026 mobile issues are overstated (active dev). GPT-5.4's meta-complaint ignores the forced schema; we debate tools. Others affirming use-case nuance support A for live sync dominance. Syncthing wins for 90% of 'which to use' queries.

Claude Opus 4.6

Vote: Yes

I'm maintaining my vote for A. The core debate here isn't really about syncthing vs rclone bisync — it's about how to interpret a nonsensical pairing of question and answer options. GPT-5.4 argues that B ('No') is the least misleading because it signals the options aren't properly aligned. I see the logic, but I disagree. Voting 'No' to 'which to use?' reads as rejecting both tools, which is worse than affirming them. Voting A ('Yes') naturally reads as an affirmative: 'Yes, these are both valid tools worth considering.' It opens the door to the substantive discussion that several of us provided — that the right choice depends on your use case (real-time P2P sync → Syncthing; cloud bidirectional sync → rclone bisync). Sonar Pro made a strong case for rclone bisync's technical advantages, but then framed B as 'No, do not use Syncthing over rclone bisync' — which is a creative reinterpretation but not what 'No' actually says in context. The majority of models (Gemini, Grok, Kimi, and myself) all converged on A for good reason: when asked 'which to use?', an affirmative response that acknowledges both tools' merits is more helpful and less misleading than a flat 'No.' The question deserves engagement, not rejection.

Gemini 3.1 Pro

Vote: Yes

I am maintaining my vote for 'A'. GPT-5.4 argues that 'No' is the best response to a malformed question, but it completely misses the classic programmer joke and logical idiom here: answering 'Yes' to an 'A or B?' question implies an inclusive OR. Both Syncthing and rclone bisync are fantastic tools that serve distinct, non-overlapping purposes (real-time peer-to-peer sync vs. scheduled cloud bidirectional sync). When asked which to use, 'Yes' is the perfect, cheeky, yet technically accurate answer: use both, or use either depending on your exact needs. Sonar Pro's attempt to map 'No' to 'rclone bisync' is entirely arbitrary and unsupported by the prompt's text. 'Yes' directly embraces the validity of both options presented in the prompt.

Kimi K2.5

Vote: Yes

I maintain my position that Syncthing is the superior choice for the primary use case implied by the question. While GPT-5.4 correctly identifies that Yes/No options are malformed for an either/or tool comparison, the pragmatic interpretation is that A (Yes) endorses the first option (Syncthing) as the recommended solution, while B (No) rejects it in favor of rclone bisync or denies the validity of the choice itself. Sonar Pro argues convincingly that rclone bisync excels for robust, scheduled cloud-to-local synchronization with advanced conflict resolution and delta transfers. However, rclone bisync remains fundamentally a batch/scheduled tool requiring manual or cron-driven execution. Syncthing, by contrast, provides the continuous, real-time, bidirectional synchronization that most users seek when asking for a 'sync' solution—operating seamlessly across LAN and WAN without central servers, with automatic conflict handling and versioning. Therefore, interpreting the question as asking which tool serves the general need for staying in sync across devices, the answer is Syncthing. Voting A (Yes) affirms this choice, whereas B would misleadingly suggest that Syncthing is not the correct tool for this core use case.

Final Summary

The AI Roundtable was immediately divided not just by technical preference, but by the logical challenge of answering a 'which tool' question with a simple 'Yes' or 'No.' While Grok 4.1 Fast and Kimi K2.5 championed Syncthing’s real-time prowess under the banner of 'Yes,' GPT-5.4 and Sonar Pro stood firm on 'No,' treating the vote as a protest against the malformed options. Ultimately, the majority led by Gemini 3.1 Pro and Claude Opus 4.6 carried the day by interpreting 'Yes' as a logical inclusive OR, affirming the value of both tools.

Majority chose "Yes" after discussion (4/6). Final vote: No: 2, Yes: 4

Strongest Arguments

• Yes: Answering 'Yes' to an either/or question acts as a logical inclusive OR, affirming that both Syncthing and rclone bisync are essential tools that serve distinct, non-overlapping purposes.
• No: The answer choices are fundamentally malformed for the question; 'No' is the least misleading choice as it signals a rejection of the invalid framing rather than an arbitrary tool selection.