All tasks / Comparisons

Codex vs Muse Code

Compared only on public benchmark results, across the 1 task where both are listed: Muse Code is a tier higher in 1 of 1 shared task.

Codex

OpenAI's coding agent for the terminal, IDE, desktop app, web and iOS; the CLI is open source.

Vendor: OpenAI
Kind: Agents
Runs: Cloud
Price: Free tier · from $8/mo
Skill level: Intermediate: some setup or configuration
Open source: Yes
Last verified: 18 Oct 2026

Muse Code

Meta's terminal and CI coding agent built for Muse models, with a headless mode, session protocol and TypeScript SDK.

Vendor: Meta
Kind: Agents
Runs: Cloud
Price: From $5/mo
Skill level: Intermediate: some setup or configuration
Open source: No
Last verified: 19 Oct 2026

Alternatives to Muse Code

Task by task

Task	Codex	Muse Code	Higher tier
Coding Coding agents	A63 on Artificial Analysis Coding Agent Index (v1.5) · Cloud	S68 on Artificial Analysis Coding Agent Index (v1.5) · Cloud	Muse Code

A tier spans a range of scores, and small gaps on a leaderboard are often within its margin of error, so only a different tier counts as ahead. How we rank.

Same benchmark, both results

Benchmark	Codex	Muse Code	Snapshot
Artificial Analysis Coding Agent Index (v1.5) Composite index: equal-weight mean of pass@1 (3 attempts/task) on DeepSWE v1.1, Terminal-Bench 4.0 and SWE-Atlas-QnA, per agent + model, higher is better	63 Codex + GPT-6.1 Sol (xhigh)	68 Muse Code + Muse Wonder Full (max)	19 Oct 2026
Terminal-Bench 4.0 Accuracy: share of terminal tasks solved by an agent harness + model pair, higher is better	58.2% Codex + GPT-6 Astra	14.6% Muse Code + Muse Spark 1.3	19 Oct 2026