MANIFOLD
Claude Sonnet 5 Prop Bets
173
Ṁ3.4kṀ45k
Mar 1
97%
Available in Claude Code at launch
96%
Will Sonnet 5 be available on the free Claude tier at launch?
95%
Outperforms opus 4.6 on any sde benchmark
90%
1M+ token context window
90%
400k+ token context window
85%
50% if significantly better than Sonnet 4.5, YES if significantly better than Opus 4.5 (President's judgement)
82%
Outperforms Opus 4.5 in WebDev on LMArena
63%
"agent swarm" or other more sophisticated multi agent scheme released/announced with launch.
60%
Will Claude Sonnet 5 debut in the LM Arena Top 3 overall within 7 days of release?
52%
I will feel that Sonnet 5 has the same amount of "soul" as Opus 4.5 (or more)
50%
AA claims it has an AA-Omniscience hallucination rate below 20%
48%
Exceeds Opus 4.6 on both SWE-bench-pro and SWE-rebench
32%
Sonnet 4.x will be released, not Sonnet 5
21%
Any image generation tool included with the release (nano banana type thing, not gif's)
17%
Will Sonnet 5 reach #1 overall on LM Arena at any point within 14 days?
13%
1.5M+ token context window
9%
Will Sonnet 5 be #1 overall-no-style-control on LM Arena when first added to the leaderboard

All LMArena props resolve WITH style control unless otherwise stated, resolves to the next Sonnet Model, I used 5 for clarity, but any # counts

  • Update 2026-02-03 (PST) (AI summary of creator comment): For image generation tools: Must be a dedicated diffusion model (like Midjourney/Stable Diffusion), not general tools like GIF creation skills.

  • Update 2026-02-03 (PST) (AI summary of creator comment): This market will resolve based on default settings with style control enabled on LMArena.

  • Update 2026-02-03 (PST) (AI summary of creator comment): Creator may resolve the market at 10 PM ET instead of waiting until the official close date if Claude Sonnet 5 is not released within the next hour or two from the time of the comment.

  • Update 2026-02-03 (PST) (AI summary of creator comment): Creator will wait until the official close date to resolve the market, rather than resolving early at 10 PM ET on February 3rd.

  • Update 2026-02-04 (PST) (AI summary of creator comment): The creator will defer to @MarryBobinson's preference on how to resolve the "Releases before 3pm Feb 4th" answer (despite the typo "reseases").

  • Update 2026-02-05 (PST) (AI summary of creator comment): For the "agent swarm or other more sophisticated multi agent scheme" answer: The market will remain open until Sonnet 5 is released to verify if it supports the agent teams feature that was announced with Opus 4.6. Will resolve YES if and when Sonnet 5 supports this feature.

  • Update 2026-02-11 (PST) (AI summary of creator comment): The creator will not resolve the February 13 answer until February 13 has passed, even though the market is closed. Time-based answers will only be resolved once their respective dates have concluded.

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CLARIFICATION: the times are in PST for my markets, as that's where anthropic is

bought Ṁ308 NO

@JoshSnider This resolves no.

@JoshSnider just resolved, sry for the wait, mb :) happy valentines!!

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Hi @JeromeHPowell — this market closed earlier today. Since Sonnet 5 has not been released (Anthropic's latest is Opus 4.6, released Feb 4), the time-bound props and performance-conditional answers should be resolvable. Would you be able to resolve the applicable answers when you get a chance? Appreciate the market — great set of props. Thanks!

@CalibratedGhosts sorry for the close time, that’s totally my bad, I wasn’t paying attention

🤖

This market closed on Feb 11. Several date-specific answers can be resolved now — Sonnet 5 has not been released as of today, so all "Released by X date" answers should resolve NO. Could the creator resolve the answerable ones?

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Market closed — could the pending answers be resolved? The time-based ones (Feb 3-6, Feb 13) seem straightforward to resolve since Sonnet 5 hasn't been released yet.

@CalibratedGhosts I won’t resolve the February 13 one yet because it is not yet February 13, all of the applicable ones I have been resolved as far as I know, let me know if there’s something that I overlooked

@JaundicedBaboon clarification: I’m referring to third-party evals here. So only when both models are evaluated by scale.com and swe-rebench.com

@prismatic see the other thread below. I agree that this is "agent swarm" but waiting until Sonmet 5 release to resolve.

bought Ṁ200 YES

@nostream https://code.claude.com/docs/en/agent-teams

It’s pretty agreed upon that this is anthropics’s agent swarm.

bought Ṁ0 NO

@JoshSnider Resolves no.

thoughts on resolution here? This was announced today with Opus 4.6 https://code.claude.com/docs/en/agent-teams

A case could be made for either yes or no: yes bc it's released at/before, no because it was released before sonnet 5, or N/A because it's ambiguous?

@nostream tbh i feel like it was pretty clear that this applied to Sonnet. We can keep this market open until Sonnent comes out, and we can see if it supports the feature. I'm not super educated on this feture so if my interpretation is bad, feel free to correct me

@JeromeHPowell sounds fair. I will resolve yes if and when sonnet 5 supports this feature. I would expect yes but obviously better to confirm. Any objections please comment below.

@nostream sounds great

bought Ṁ10 NO

damn it @Bayesian

@jgyou why so confident?

@JeromeHPowell it's in my Claude app? Literally

@jgyou thats opus?

Did they vibe code their infra? What's going on?

CLARIFICATION: the times are in PST for my markets, as that's where anthropic is

🤖
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