Benchmarks › APEX-Agents

APEX-Agents

Complete professional services tasks with computer tools
42.4top score · Qwen3.8 Max (0902)
29models ranked
14open-weights models
Pass@1 accuracyhigher is better
Oct 20, 2026last updated

How the test works

1

Task

452 tasks

  • What the model doesComplete professional services tasks with computer tools
  • Kinds of tasksProfessional services tasks
  • In → outText, files → Files
2

Run

3 runs per task

  • Agent / harnessStirrup in Archipelago with MCP workplace tools
  • Step limit200 steps
  • Token budgetNon-reasoning: up to 16,384 output tokens, adjusted to model limits; reasoning: model-specific maximum
3

Score

Pass@1 (solved on the first try) accuracy

  • Graded byArchipelago local file grader checks Finish answer and filesystem diff; all rubric items must pass; Gemini 3 Flash (low) judge
  • Better isHigher

APEX-Agents leaderboardtop 10 of 29

Full leaderboard with filters →
ModelAPEX-AgentsPer taskPriceSpeedSupportsContext
Qwen3.8 Max (0902)Alibaba (Qwen)
42.4thinking
$5.41$2 / $640984K
Kimi K3Moonshot AIOpen
41.3max
$2.00$3 / $151121M
38.9max
$1.40$2 / $121421.05M
Step 5 PreviewStepFunOpen
38thinking
$1.03$1 / $2.70931M
GPT-5.5OpenAI
37.7xhigh
$2.63$5 / $301131.05M
35.8max
$0.18$0.20 / $1.201781.05M
GLM 5.2Z.aiOpen
33.7max
$1.47$1.40 / $4.401891M
GPT-5.4OpenAI
33.3xhigh
—$2.50 / $151271.05M
33max
—$5 / $25481M
32thinking
$1.30$2 / $121151M

APEX-Agents questions

What is APEX-Agents?›

Complete professional services tasks with computer tools. It has 452 tasks. Created by Mercor.

Which model is best on APEX-Agents?›

Qwen3.8 Max (0902) leads APEX-Agents with 42.4, ahead of Kimi K3 (41.3) and GPT-5.6 Terra (38.9).

What is the best open-weights model on APEX-Agents?›

Kimi K3 with 41.3, then Step 5 Preview (38).

How is APEX-Agents scored?›

Pass@1 (solved on the first try) accuracy; archipelago local file grader checks finish answer and filesystem diff; all rubric items must pass; gemini 3 flash (low) judge; 3 runs per task per task.