Claude Sonnet 5.5

By Anthropic. 5 results on 4 boards, copied as published. Different boards, different metrics: don't add them up.

License (as listed)Proprietary

Hosting regionNot confirmed

Boards4

Code

No result on the boards we captured

Agentic / terminal

61.82%Terminal-Bench 4.0
Sonnet 5.5 (max) · Resolution rate
Claude Code · as of 2026-09-28 ↗

Websites

1769LMArena WebDev Arena
claude-sonnet-5.5-xhigh · Arena score · board #3
LMArena WebDev (agentic front-end tasks) · as of 2026-10-22 ↗
1709LMArena WebDev Arena
claude-sonnet-5.5-high · Arena score · board #7
LMArena WebDev (agentic front-end tasks) · as of 2026-10-22 ↗
92.39%Vals AI Vibe Code Bench v1.1
Claude Sonnet 5.5 · Score % · board #1
OpenHands · as of 2026-10-20 ↗

Design

1354Design Arena (All categories)
claude-sonnet-5-5 · Elo · board #7
Design Arena · as of 2026-10-24 ↗

Android

No result on the boards we captured

iOS

No mature public leaderboard

Available in

No plan row in our pricing data names this model version.

Use cases with this model

Claude Opus 5.5Claude Sonnet 5.5

A business tycoon game "85% done … All built with Opus 5.5 + Sonnet 5.5"

Builder: @alexcooldev
Posted: Oct 15, 2026
Plan: —
Cost: Not disclosed

CodeRead the post

x.com · link re-checked 2026-10-16

Claude CodeClaude Sonnet 5.5

Rebuilt Shopify's four AI "gates" in headless Claude Code on tinydb and measured which gates catch bugs

Builder: AI Dive
Posted: Oct 14, 2026
Plan: Sonnet 5.5
Cost: Stated: $0.085" (no gate) to "$0.28" per run

CodeRead the post

dev.to · web source · link re-checked 2026-10-16

DeepSeek V4 ProGLM 5.3GPT-6 Astra+5

Same 3D prompt one-shot across 8 models incl. Mistral Large 4

Builder: @domsilvestre
Posted: Oct 6, 2026
Plan: —
Cost: Not disclosed

DesignRead the post

x.com · link re-checked 2026-10-16

Claude Sonnet 5.5

"Understory", an action/puzzle RPG across 5 biomes. Sonnet 5.5 was given "full artistic control … made in a couple days"

Builder: @DannyLimanseta
Posted: Oct 6, 2026
Plan: —
Cost: Not disclosed

DesignCodeRead the post

x.com · link re-checked 2026-10-16

Claude Sonnet 5.5

A push-to-talk voice assistant: Scribe v2 → Sonnet 5.5 → ElevenLabs v4 on Cloudflare Workers

Builder: @thinkingtraces
Posted: Oct 6, 2026
Plan: —
Cost: Not disclosed

CodeRead the post

x.com · link re-checked 2026-10-16

Same family: Claude 39

Claude Opus 5.5

A Picasso-style three.js Tetris; Opus 5.5 also played and recorded the game itself

Builder: @SimonasLTU1
Posted: Oct 15, 2026
Plan: —
Cost: Not disclosed

DesignRead the post

x.com · link re-checked 2026-10-16

GPT-6.1 SolClaude Opus 5.5

A game "in about two weeks". GPT-6.1 Sol made the assets, Opus 5.5 did "most of the coding and game logic"

Builder: @hakimieiqbal
Posted: Oct 15, 2026
Plan: —
Cost: Not disclosed

CodeRead the post

x.com · link re-checked 2026-10-16

Claude Opus 5.5Model test

Cost (user-reported): "look what it built through the API in 3 minutes for $0.19. Claude Opus 5.5 took 15 minutes and $2.61 on the same prompt."

Builder: @0xKense1
Posted: Oct 15, 2026
Plan: —
Cost: Not disclosed

DesignRead the post

x.com · link re-checked 2026-10-16

Claude Opus 5.5Gemini 4 ArgonModel test

Test: "Same prompt and same references, Opus 5.5 vs Gemini 4 Argon. Opus did it in one shot. Argon got 3 rounds of feedback and still can't match…

Builder: @anxuanng
Posted: Oct 14, 2026
Plan: —
Cost: Not disclosed

DesignRead the post

x.com · link re-checked 2026-10-16

Claude Opus 5.5Second-hand

An "Altersteilzeit" (German partial-retirement) countdown app, built in 5 days over 16 versions with badges and mini-games

Builder: Thorsten Meyer, as reported by the Good Sidekick Team
Posted: Oct 13, 2026
Plan: —
Cost: Not disclosed

DesignRead the post

goodsidekick.com · web source · link re-checked 2026-10-16

Claude Opus 5.5Second-hand

"Destroy Any Website", a weekend browser sandbox game that turns any URL into destructible 2D terrain (TypeScript + Canvas 2D, multiplayer)

Builder: Hugo (u/HugoDzz), as reported by the Hitechreports Desk via XDA
Posted: Oct 13, 2026
Plan: —
Cost: Not disclosed

WebsitesDesignRead the post

hitechreports.com · web source · link re-checked 2026-10-16

All 39 Claude use cases →

Sources

lmarena.ai/leaderboard/webdev vals.ai/benchmarks/vibe-code tbench.ai/leaderboard designarena.ai/leaderboard

Claude Sonnet 5.5

Available in

Use cases with this model

A business tycoon game "85% done … All built with Opus 5.5 + Sonnet 5.5"

Rebuilt Shopify's four AI "gates" in headless Claude Code on tinydb and measured which gates catch bugs

Same 3D prompt one-shot across 8 models incl. Mistral Large 4

"Understory", an action/puzzle RPG across 5 biomes. Sonnet 5.5 was given "full artistic control … made in a couple days"

A push-to-talk voice assistant: Scribe v2 → Sonnet 5.5 → ElevenLabs v4 on Cloudflare Workers

Same family: Claude 39

A Picasso-style three.js Tetris; Opus 5.5 also played and recorded the game itself

A game "in about two weeks". GPT-6.1 Sol made the assets, Opus 5.5 did "most of the coding and game logic"

Cost (user-reported): "look what it built through the API in 3 minutes for $0.19. Claude Opus 5.5 took 15 minutes and $2.61 on the same prompt."

Test: "Same prompt and same references, Opus 5.5 vs Gemini 4 Argon. Opus did it in one shot. Argon got 3 rounds of feedback and still can't match…

An "Altersteilzeit" (German partial-retirement) countdown app, built in 5 days over 16 versions with badges and mini-games

"Destroy Any Website", a weekend browser sandbox game that turns any URL into destructible 2D terrain (TypeScript + Canvas 2D, multiplayer)

Sources

The weekly diff