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OpenAI Codex
risingPositive
vs
competes with (2)
Claude Code logo
Claude Code
stablePositive
Est. 2025·San Francisco, CA
Coverage (30d)
1vs60
This Week
1vs21
Evidence
5 articles
Relationships
1
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Timeline

OpenAI Codex2026-06-15

OpenAI Codex reached 5 million weekly users

Claude Code2026-06-15

Agentic credit split takes effect, moving claude -p and CI workflows to separate billing bucket

Claude Code2026-06-14

Claude Code /loop feature highlighted for long-horizon task execution

Claude Code2026-06-11

Anthropic launched the /loop command for Claude Code, enabling autonomous multi-agent workflows.

Claude Code2026-06-08

Claimed capability to generate production Lottie animations via Show HN post

Claude Code2026-06-06

Claude Code demonstrated autonomous 10-stage PhD-level research pipeline from blank page to publication-ready output

Claude Code2026-06-04

Claude Code quality dropped post-4.6 with ~25% instruction misses reported

OpenAI Codex2026-04-08

Weekly active users grew from 2M to 3M in under a month, a 50% increase

OpenAI Codex2025-12-26

OpenAI Codex agent launched as an autonomous coding tool

Ecosystem

OpenAI Codex

usesGitHub Copilot3 src

Claude Code

usesModel Context Protocol61 src
competes withCursor13 src
usesGitHub13 src
competes withGitHub Copilot12 src
usesClaude Opus 4.69 src
usesClaude Sonnet 4.67 src

Benchmarks

terminal-2
OpenAI Codex
Claude Code78.9
swe-pro
OpenAI Codex
Claude Code69.2
swe-verified
OpenAI Codex
Claude Code88.6

Evidence (5 articles)

Related Comparisons