Kimi K3 in OpenCode 1.18.35

as run, 1,746 characters. Every result for this prompt

Build a pathfinding race visualizer: four copies of the same grid maze, side by side (stacked on a phone), where A*, Dijkstra, breadth-first search and greedy best-first search solve the same start-to-goal problem at the same time, step by step. Show each algorithm's frontier, visited cells and final path in distinct colours, and live counters for cells visited, path length and steps taken; when all four finish, show a small results table ranking them and say which found the shortest path and which explored the fewest cells. Controls: generate a new random maze (a perfect maze with some extra openings so paths differ), clear the grid, draw or erase walls by dragging on any grid (the edit applies to all four), move the start and goal by dragging them, a speed slider, play, pause and single step. Diagonal moves are off; every move costs 1. So the page is alive without input, on load it generates a maze and starts the race automatically, and when a race finishes it waits 3 seconds and runs a new maze, forever, until the user touches a control. Make it clear and beautiful, the kind of visual a teacher would put on a projector.

Save it as index.html in the current directory: one self-contained file with inline CSS and JavaScript only, no libraries or frameworks, and no external requests of any kind (no CDNs, web fonts, images or audio files). It must work when opened directly from disk, fit any window from a 390 px wide phone to a desktop, and run without console errors. You may serve it locally and open it in headless chromium (/usr/bin/chromium, software WebGL, no GPU) to screenshot and inspect your own output, and iterate on your own before finishing. Close any browser you open as soon as you've taken your screenshot.

Headline cost $1.10, as reported by OpenCode (its own bill for the run). The list-price estimate from the token counts is $1.10.

Total computed from tokens

$1.1003

Total reported by the harness

$1.1003

Difference

matches

OpenCode 1.18.35 reported its own total; token counts x list prices shown beside it. The harness reports reasoning tokens separately from output; here output includes them (13,230 visible + 20,544 reasoning), and both bill at the output rate.

Prices: https://platform.kimi.ai/docs/pricing/chat, 2026-09-24.

one prompt, agentic harness (self-review allowed)skills=on

• frozen prompt (written): core requirements sha256 14da70349e0a, full harness prompt sha256 14da70349e0a; exact prompt text used by the existing harness rows of this test on the runs branch (copied from algoviz_pathfinding_race__claude-code__fable-5-1__attempt1/meta.json, sha256 verified); Beta half of th
• no TUI: the harness ran in its non-interactive mode, so there are no TUI screenshots; the timelapse is built from version renders only
• OpenCode config (providers only, permission allow-all except question; no agents/instructions) + both default skill kits in xdg/config/opencode/skill (skills=on)
• infra retries: 0
• in the published transcript the sandbox HOME directory is shown as <HOME>
• skills=on: 54 skills installed in the harness skill directory before launch (video-33 remotion-dev/skills + heygen-com/hyperframes@0b5db9da + f; web-threejs-21 [redacted]/ai-AI Model Reviewer skills/ (alpha/mr-homebar)@7521074d98c9).
• Mode: headless run mode (opencode run --format json), inside bubblewrap sandbox
• Isolation audit: none
• Renderer: canvas 2D (each of the four maze panels is drawn on its own <canvas> with getContext('2d')); no library, nothing loaded from a CDN (single self-contained file).
• Card video: the run's own video.mp4 (H.264 yuv420p, unchanged). Poster: the run's own render.png.
• Skills on: the run had 54 skills installed (33 video + 21 web/Three.js), as its meta records.
• Kimi K3 served via Fireworks (OpenCode provider fireworks-ai).
• Same frozen prompt as the other rows on this test; configurations differ and all rows are unscored, so this is not a head-to-head result.