OpenAI Codex vs FuXi (2026): Which Vibe Coding App Is Better?

Both are popular terminal coding agents. Here is how OpenAI Codex and FuXi stack up on price, strengths and weaknesses, and which one we would pick.

OpenAI Codex

OpenAI's coding agent for the terminal, IDE and cloud, included with ChatGPT plans

9.1 /10

Pricing: Free plan, paid from $8/mo

Pros

Included with ChatGPT plans you may already pay for
Open-source CLI plus cloud tasks that open pull requests
Reads AGENTS.md, the cross-tool instructions file

Cons

Fewer extension points than Claude Code (no plugin marketplace)
Usage limits depend on your ChatGPT plan

Visit OpenAI Codex ↗

FuXi

Provider-agnostic terminal coding agent positioned as a bring-your-own-model Claude Code alternative

7.0 /10

Pricing: Freemium

Pros

Feature-rich single static binary: 50+ tools, LSP diagnostics, Jupyter, browser automation, MCP client, durable sessions with checkpoints
Unusually transparent evaluation practice — publishes a reproducible, self-run benchmark against Claude Code with explicit caveats instead of a marketing score

Cons

Source code is proprietary despite living on GitHub — the repo hosts only docs, installers and the issue tracker, not the implementation
Installs via curl-pipe-to-shell, and ships a flag that bypasses all permission checks — treat it the way you would any command with root-level reach

Visit FuXi ↗

OpenAI Codex vs FuXi at a glance

	OpenAI Codex	FuXi
Editor score	9.1 / 10	7.0 / 10
Pricing model	Freemium	Freemium
Starting price	$8/mo	Free
Reader upvotes	1	0
Best for	terminal, agent, openai	terminal-agent, provider-agnostic, mcp-client
Agent Skills support	Yes	No
Subagents support	Yes	No
MCP support	Yes	No
AGENTS.md support	Yes	No
Plugins support	No	No
Hooks support	No	No
Rules support	No	No
Agent skills in this directory	58	0
Subagents & agents in this directory	43	3
MCP servers in this directory	74	0

Our pick

OpenAI Codex edges it with a score of 9.1 versus 7.0. OpenAI Codex is the better fit if you value: included with chatgpt plans you may already pay for, open-source cli plus cloud tasks that open pull requests. Choose FuXi instead if you need: feature-rich single static binary: 50+ tools, lsp diagnostics, jupyter, browser automation, mcp client, durable sessions with checkpoints, unusually transparent evaluation practice — publishes a reproducible, self-run benchmark against claude code with explicit caveats instead of a marketing score.