Cline vs OpenAI Codex CLI: Which AI Agent Is Better?
An in-depth comparison of Cline and OpenAI Codex CLI across output quality, autonomy, reliability, speed, value, and ease of use. Vote for your favorite.
An in-depth comparison of Cline and OpenAI Codex CLI across output quality, autonomy, reliability, speed, value, and ease of use. Vote for your favorite.
Either way, you pay for the model calls. A median coding-agent day on our gateway is 95 requests and 8.6 million tokens. The table prices every step at one model’s rate.
Both run on Standard Compute, where each step goes to the cheapest model that can do it: routine steps go to efficient open models, hard ones to frontier models such as Claude Fable 5.1 or GPT-6 Astra.
| Model | Typical day | Busy day |
|---|---|---|
| Claude Opus 5.5 | $7.34 | $59.10 |
| Claude Sonnet 5.5 | $3.67 | $29.55 |
| GPT-6 Luna | $0.23 | $2.43 |
Fixed monthly plans from $19. Eligible new accounts can try $0.25 of compute first, no card. Trial terms
Pick a winner in each category. You can change your vote anytime. 4 votes cast so far.
ClineCodexChoose Cline if you are developers who want a powerful, safety-gated agent inside the editor they already use. Choose OpenAI Codex CLI if you are chatGPT subscribers who want a capable terminal agent at no extra cost.
In our editorial scoring, OpenAI Codex CLI leads in 2 of six categories (output quality and speed), while Cline leads in 1 (value). On price, Cline runs free (byo api key) and is open source; OpenAI Codex CLI runs included with every chatgpt plan / api and is open source.
Across 4 community votes on this matchup, the community has it tied. Cast your own vote above to move the needle.
What it costs to run Cline or Codex
Best API for Cline →
5 options compared, with prices and limits
Best API for Codex →
3 options compared, with prices and limits
Standard Compute sends each step to the cheapest model that can do it, on providers we vet for price, uptime and speed. Plans start at $19 a month, and eligible new accounts can try $0.25 of compute with no card. Choose your agent below to connect.
See the trial and activation steps →
More on Cline: How do I use DeepSeek in Cline? · How do I use GLM 5.3 in Cline?
More on Codex: Is Codex CLI free, and what does it cost? · Can Codex CLI Use Other Models Like Claude or DeepSeek?
Cline is the open-source coding agent that defined the in-editor agent category, with 11M+ installs across VS Code, JetBrains, Cursor, its CLI and a new desktop app. Its Plan/Act modes separate thinking from doing: the agent proposes a plan you approve before it touches files or runs commands. Apache-2.0 licensed with full bring-your-own-key model freedom, MCP integration, and deployment options up to on-prem and air-gapped for enterprises.
Codex CLI is OpenAI's open-source coding agent for the terminal. It edits files, runs commands in a sandbox with configurable approval modes, and can hand longer tasks off to Codex cloud to run in the background; the same agent also ships as an IDE extension and a desktop app. Usage is included with every ChatGPT plan, from Free and Go up to Plus and the $100 to $500 Pro tiers, with tighter limits on the cheaper plans, which makes it the default choice for developers already in the OpenAI ecosystem.
Cline and Codex both run on Standard Compute
