codex vs cog
codex and cog share 8 technologies: axum, Sentry, Tokio, tracing, tracing-subscriber, OpenTelemetry, tracing-opentelemetry, and opentelemetry-otlp. codex is written in Rust and cog in Go.
LinkedInWhat they share and what sets them apart
openai
codex
Lightweight coding agent that runs in your terminal
Rust134.9kRead on November 12, 2026, at commit 6bfdc75What is codex built with?Only in codex
- codex-attachment-store
- codex-cloud-tasks-client
- codex-queue-extension
- codex-thread-store
- codex-utils-cache
- sqlx-sqlite
- sqlx
libsqlite3-sys
- lru
- SQLite
rama-http
- tiny_http
- tower
objc2-app-kit
- two-face
- codex-tui
- Ratatui
- crossterm
ansi-to-tui
- sqlx-macros
- codex-aws-auth
- codex-keyring-store
- codex-login
- codex-user-verification
- codex-websocket-auth
- codex-workload-identity
- oauth2
- keyring
- jsonwebtoken
- ed25519-dalek
- hmac
- codex-agent-graph-store
- codex-agent-identity
- codex-agent-message-board-client
- codex-agent-message-board-extension
- codex-agent-message-board-host
- codex-agent-roles
- codex-chatgpt
- codex-client
- codex-code-mode-runtime
- codex-collaboration-mode-templates
- codex-context-fragments
- codex-core-plugin-common
- codex-extension-api
- codex-external-agent-migration
- codex-guardian-context
- codex-guardian-reviewer
- codex-image-generation-extension
- codex-lmstudio
- codex-mcp
- codex-mcp-extension
- codex-memories-extension
- codex-memories-read
- codex-memories-write
- codex-message-board-mcp
- codex-model-provider
- codex-model-provider-info
- codex-models-manager
- codex-ollama
- codex-plugin-host
- codex-prompts
- codex-protocol
- codex-response-debug-context
- codex-runtime-agent-instance
- codex-skills
- codex-skills-extension
- codex-tools
- codex-web-search-extension
openai-codex-cli-bin
- rmcp
- mxc-sdk
- bm25
- codex-mermaid
- codex-utils-image
- codex-utils-template
- png
- image
- pulldown-cmark
- zip
- linkify
- quick-xml
- symphonia
- schemars
- Pydantic
- codex-otel-trace-websocket
- codex-rollout-trace
- tracelogging
- log
tracing-appender
opentelemetry-appender-tracing
In common
replicate
cog
Containers for machine learning
Go9.5kRead on November 15, 2026, at commit ee8ae12What is cog built with?Only in cog
- net/http
- github.com/tonistiigi/go-csvvalue
- github.com/getkin/kin-openapi
- github.com/xeipuuv/gojsonschema
- jsonschema
structlog
- Docker
Side by side
codexcog
SizeLines written by people and agents, without generated ones; code files, without tests.
codex2,400,707 lines written4,321 code files
cog114,111 lines written254 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
codex2.7% of its commits signed by AIWith Codex, Claude Code, and GitHub Copilot
cog0.8% of its commits signed by AIWith GitHub Copilot and Claude Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
codexLast push November 12, 202613,452 commits134,947 stars
cogLast push November 7, 20262,234 commits9,498 stars
TestsThe files that test the code, and the share of code files a test imports.
codex2,531 test files52% of its code files have a test that imports them
cog183 test files62.6% of its code files have a test that imports them
Frequently asked questions
Which is bigger, codex or cog?
codex, with 2,400,707 lines written; cog has 114,111.
The proof: openai/codex's code at commit 6bfdc75
Which has more GitHub stars, codex or cog?
codex, with 134,947 stars; cog has 9,498.
The proof: openai/codex on GitHub
Which has more tests, codex or cog?
codex, with 2,531 test files; cog has 183.
The proof: openai/codex's code at commit 6bfdc75
Which was updated more recently, codex or cog?
codex: its last push was on November 12, 2026, and cog's on November 7, 2026.
The proof: openai/codex's commits on GitHub
Which has more commits signed by AI, codex or cog?
codex: an AI signed 2.7% of its commits, with Codex, Claude Code, and GitHub Copilot; in cog, 0.8%.
The proof: the commits each tool signed in openai/codex
See inside your code, today.
Paste your repo and see it drawn, part by part: a medium one in under a minute.
Free, no account.
