codspeed vs nsys-ai
codspeed is a plugin bundle for AI coding tools published by CodSpeedHQ. Marketplaces we read that list it: 3 (Claude Code: claude-plugins-official, Community GitHub marketplaces, Claude Code: claude-plugins-community). nsys-ai is a plugin bundle for AI coding tools published by GindaChen. Marketplaces we read that list it: 1 (Community GitHub marketplaces). As of our marketplace pass on 2026-10-23. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  codspeed | |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 1.0.0 Forks (GitHub): 34 Stars (GitHub): 376 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Listed Version: 1.0.0 Forks (GitHub): 34 Stars (GitHub): 376 Not marked · First seen |
Not listed |
| Community marketplace gindachen/nsys-ai | Not listed | Listed Version: 0.2.2 Forks (GitHub): 21 Stars (GitHub): 89 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | codspeed | nsys-ai |
|---|---|---|
| Marketplaces that list it (differs) | 3 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 376 (better) | 89 (worse) |
| Forks (GitHub) (differs) | 34 (better) | 21 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.codspeed.io/mcp) | Installs as a plugin bundle |
| Transport (differs) | Streamable HTTP | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 3 | 1 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/codspeedhq/codspeed | github.com/gindachen/nsys-ai |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-11 | 2026-10-19 |
| Endpoint at the last check (differs) | Responded 3 days ago | no remote endpoint we check |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
codspeed
CodSpeed is the all-in-one performance testing toolkit. Dive into benchmarking results, flamegraphs, and performance comparisons — give Claude granular profiling context to pinpoint bottlenecks and autonomously iterate on performance via the CodSpeed MCP server.
nsys-ai
GPU profile analysis for NVIDIA Nsight Systems. Triage bottlenecks, diagnose NCCL, compute MFU, compare regressions, and drill into SASS instructions. Requires the nsys-ai CLI (>= 0.2.2): pip install nsys-ai.
How to run each
codspeed As a Claude Code plugin
/plugin install codspeed@claude-plugins-officialnsys-ai As a Claude Code plugin
/plugin marketplace add gindachen/nsys-ai
/plugin install nsys-ai@GindaChenCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only codspeed has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: codspeed · What it can do: nsys-ai · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.