Google's own table puts it near the top. An independent leaderboard puts it 23rd for code. Both are true, and the builds show which one matters.
About 9 min
Codex is not a coding tool with a chat window bolted on. Almost every feature that separates it from ChatGPT falls out of one decision: it works on your disk, not on a copy.
About 9 min
Most model demos cannot be wrong in a way you can see. This one can — the numbers either match the source files or they do not.
About 4 min
Two products share the name, and the settings screen matters more than the build demo — because this one runs at 8am when nobody is watching.
About 5 min
A vault where the agent owns the wiki, may never touch the sources, and has to cite one for every claim it writes.
About 9 min
Ask the strongest model you have to write the operating orders for the cheaper one that replaces it — a succession letter, not a prompt.
About 8 min
Anthropic's pricing page makes a specific claim: Claude Opus 5 costs half what Claude Fable 5 costs. Not "a bit less" — exactly half, on both sides of the meter.
| Input / 1M tokens | Output / 1M tokens | |
|---|---|---|
Claude Fable 5 (claude-fable-5) |
$10.00 | $50.00 |
Claude Opus 5 (claude-opus-5) |
$5.00 | $25.00 |
About 4 min