Claude Mythos 5
Canonical API list price $10 in / $50 out per million tokens. Provider prices below can differ.
Agent scores
Terminal-Bench 2.x
shell agent loops
Can the model finish real terminal / shell-agent tasks end to end — install tools, run commands, recover from errors.
Editorial scores, not auto-scraped. Versions (2.0 vs 2.1) are not always comparable.
SWE-bench Pro
software engineering
Can the model solve real software-engineering problems — patches, reviews, and repo-level fixes — in a single pass.
This is SWE-bench Pro, not SWE-bench Verified. Vendor harness notes are marked (v).
MCP-Atlas
multi-tool use
Can the model use many Model Context Protocol tools together — pick the right tool, pass arguments, and chain calls.
Vendor launch scores
Cited on GLM-5.3 launch · 2026-08-14. Vendor harness — not independent evals.
| Benchmark | Score | Note |
|---|---|---|
| Cyber | ||
| CyberGym | 83.8 | |
Source: z.ai/blog/glm-5.3. (v) = vendor harness.
Extended scores
BFCL
function calling
Berkeley Function Calling Leaderboard (V4): can the model call APIs with the right names, types, and arguments.
Coverage is thin on newest models. Sourced manually from the Berkeley leaderboard.
tau-bench
multi-turn agent tasks
Can the model hold a multi-turn tool-using conversation and finish a policy-constrained task.
AIME
math reasoning
American Invitational Mathematics Examination problems — contest math, not coding.
MMLU-Pro
knowledge breadth
Harder multiple-choice knowledge questions across academic subjects.
LiveCodeBench
live coding
Can the model solve fresh programming problems (contamination-resistant coding).
Where to buy
No tracked provider lists this model yet. API list price is still $10/$50.