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se-log-5xx
train
software
easy
Here is an excerpt from a web server access log. 113.36.130.50 - - [12/Oct/2026:10:52:27 +0000] "GET /api/pay HTTP/1.1" 200 5502 202.166.122.164 - - [12/Oct/2026:10:14:35 +0000] "GET /api/orders HTTP/1.1" 500 7049 202.166.122.164 - - [12/Oct/2026:10:44:16 +0000] "GET /health HTTP/1.1" 200 3670 138.187.98.121 - - [12/O...
11
{ "type": "int" }
se-log-uniq-ip
train
software
medium
Here is an excerpt from a web server access log. 14.94.226.230 - - [12/Oct/2026:10:37:57 +0000] "GET /api/orders HTTP/1.1" 200 8474 129.113.74.126 - - [12/Oct/2026:10:33:23 +0000] "GET /api/orders HTTP/1.1" 500 2856 183.93.196.75 - - [12/Oct/2026:10:37:18 +0000] "GET /static/app.js HTTP/1.1" 400 4951 18.126.47.213 - -...
6
{ "type": "int" }
se-pyexpr
train
software
easy
Evaluate this Python 3 expression exactly as the interpreter would: int('101101', 2) + max(4, 9, 2) * min(7, 3) What integer does it produce? Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
72
{ "type": "int" }
se-json-patch
train
software
medium
Start from this JSON object: {"active": true, "count": 14, "name": "alpha", "score": 9.5, "tags": ["x", "y"]} Apply these operations in order: 1. set key 'count' to 21 2. remove key 'active' 3. append 'z' to the list at key 'tags' 4. set key 'owner' to 'ops' Answer with the resulting JSON object as a sin...
{"count":21,"name":"alpha","owner":"ops","score":9.5,"tags":["x","y","z"]}
{ "type": "json_fields" }
se-ipv4-count
train
software
medium
Below is a firewall draft. A 'bare IPv4 address' means exactly four dot-separated decimal octets, each 0-255, standing alone as a token. route 8.8.8.8 via gw1 route ::1 via gw2 note version 1.2.3.4.5 released allow 256.1.1.1 any permit 172.16.0.9 log forward 10.0.300.14 to pool_b deny 192.168.4 any mirror 203.0.113.7 ...
6
{ "type": "int" }
se-log-errors
train
software
easy
An application log shows: 2026-10-12 09:17:47 [INFO] worker-2 processed batch 495 2026-10-12 15:27:55 [DEBUG] worker-3 processed batch 872 2026-10-12 12:53:36 [WARN] worker-4 processed batch 768 2026-10-12 22:14:42 [WARN] worker-1 processed batch 404 2026-10-12 03:55:32 [INFO] worker-1 processed batch 782 2026-10-12 1...
2
{ "type": "int" }
in-btu-kw
train
industrial
easy
A heater is rated at 42000 BTU per hour. Convert this to kilowatts (1 BTU/h = 0.000293071 kW). Answer in kW rounded to two decimal places. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
12.31
{ "type": "num", "rel_tol": 0.005 }
in-sensor-median
train
industrial
medium
A temperature sensor logged these readings (time, deg C): 8:00 27.9 8:30 26.4 9:00 23.3 9:30 20.6 10:00 26.8 10:30 30.6 11:00 23.6 11:30 29.1 12:00 18.5 12:30 24.9 13:00 20.6 13:30 24.4 14:00 25.9 14:30 29.1 15:00 24.8 15:30 29.3 16:00 22.2 16:30 19.7 What is the median of the readings from 10:00 th...
24.6
{ "type": "num", "rel_tol": 0.002 }
in-battery-soc
train
industrial
easy
A battery has a rated capacity of 100 Ah and starts fully charged. It discharges at a constant 7.5 A for 6 hours (ignore efficiency losses). What is its state of charge afterward, as a percentage? Round to one decimal place; answer with just the number. Reply with exactly one JSON object and nothing else: {"answer": "....
55.0
{ "type": "num", "rel_tol": 0.005 }
in-parts-ooc
train
industrial
medium
Twelve machined parts must measure 25.00 mm +/- 0.08 mm. Measured diameters (mm): P-01 24.969 P-02 24.876 P-03 25.025 P-04 24.890 P-05 24.995 P-06 24.950 P-07 25.059 P-08 24.897 P-09 25.140 P-10 24.872 P-11 24.870 P-12 25.052 How many parts are out of tolerance? Answer is one integer. Reply with exactly o...
6
{ "type": "int" }
sc-rate-const
train
science
easy
A first-order reaction has initial concentration [A]0 = 0.8 mol/L. After t = 14 minutes the concentration is [A] = 0.26 mol/L. Using ln([A]0/[A]) = k t, find the rate constant k in min^-1. Round to four decimal places. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for...
0.0803
{ "type": "num", "rel_tol": 0.01 }
sc-moles
train
science
easy
How many moles are in 37.0 g of NaCl? Use a molar mass of 58.44 g/mol. Round to three decimal places. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
0.633
{ "type": "num", "rel_tol": 0.005 }
sc-ph
train
science
medium
20 mL of 0.05 M HCl is diluted with water to a final volume of 500 mL. HCl is a strong acid. What is the pH of the diluted solution? Round to two decimal places. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
2.70
{ "type": "num", "rel_tol": 0.01 }
sc-half-life
train
science
medium
A cobalt-60 source has activity proportional to a mass of 480 mg and a half-life of 5.27 years. How much remains after 15.81 years? Round to the nearest whole milligram. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field...
60
{ "type": "num", "rel_tol": 0.01 }
of-invoice
train
office
easy
An invoice lists these line items: Consulting, 12 h: $180.00 x 12 License fee: $450.00 x 1 Travel: $612.40 x 1 Support retainer: $300.00 x 1 A correction memo says: the Travel charge is withdrawn and replaced by a $480.00 flat expense, and a 10% courtesy credit applies to the corrected total. What is the fina...
3051.00
{ "type": "num", "rel_tol": 0.001 }
of-meeting
train
office
medium
Three colleagues are busy during these intervals (work day 09:00-17:00): Ana: 09:00-09:45, 10:30-11:15, 13:00-14:30, 16:00-17:00 Bo: 09:00-10:00, 11:00-12:00, 13:30-15:00 Cy: 09:30-10:30, 11:30-12:30, 14:00-16:30 They need a 30-minute meeting, aligned to quarter-hour starts. What is the earliest start time that...
12:30
{ "type": "string" }
of-long-words
train
office
easy
Here is an internal memo: "Please route the quarterly vendor summary to procurement before Friday. The revised totals exclude the duplicate freight charge flagged in June. Confirm receipt with accounting and archive the signed copy. Do not circulate drafts outside the finance group." How many words in the memo ar...
23
{ "type": "int" }
of-expense
train
office
medium
Expense policy caps each line item at: meals $60.00, lodging $200.00, transport $50.00. Submitted items: meals: $46.20 meals: $78.40 lodging: $210.00 lodging: $185.00 transport: $64.00 transport: $55.00 What is the total reimbursable amount after applying the per-item caps? Answer in dollars to two decim...
591.20
{ "type": "num", "rel_tol": 0.001 }
fi-loan
train
finance
easy
A loan of $24,000 at 7.2% annual interest is repaid in 36 equal monthly payments. Using M = P r / (1 - (1+r)^-n) with r the monthly rate, what is the monthly payment? Round to two decimals; answer with just the number. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for...
743.25
{ "type": "num", "rel_tol": 0.005 }
fi-npv
train
finance
medium
Cash flows for a project are: year 0: $-5,000, year 1: $+1,600, year 2: $+1,900, year 3: $+2,100, year 4: $+1,700 (year 0 is paid today). At a discount rate of 9%, what is the net present value in dollars? Round to two decimals; answer with just the number (negative if the project loses money). Reply with exactly one J...
892.99
{ "type": "num", "rel_tol": 0.01 }
fi-cagr
train
finance
easy
An investment grows from $18,500 to $31,200 over 4 years. What is the compound annual growth rate as a percentage? Round to one decimal place; answer with just the number. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer fie...
14.0
{ "type": "num", "rel_tol": 0.01 }
fi-tax
train
finance
medium
Progressive tax brackets: first $12,000 at 0%; next $20,000 at 10%; next $38,000 at 22%; remainder at 32%. What is the total tax on an income of $84,500? Round to two decimals; answer with just the number. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or...
15000.00
{ "type": "num", "rel_tol": 0.002 }
fi-simple-int
train
finance
easy
$7,600 is placed in a simple-interest account at 4.8% per year. How much interest accrues after 30 months? Round to two decimals; answer with just the number. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
912.00
{ "type": "num", "rel_tol": 0.005 }
ma-edges
train
math
easy
An undirected graph is given as an adjacency list: 0: [1, 4] 1: [0] 2: [4, 5] 3: [5, 6] 4: [0, 2, 5, 7] 5: [2, 3, 4, 6] 6: [3, 5] 7: [4] How many edges does it have? Answer is one integer. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units o...
9
{ "type": "int" }
ma-triangles
train
math
medium
An undirected graph is given as an adjacency list: 0: [1, 2, 3] 1: [0, 2, 3] 2: [0, 1, 3] 3: [0, 1, 2, 4, 5] 4: [3, 5] 5: [3, 4, 6] 6: [5] How many triangles (three mutually connected vertices) does it contain? Answer is one integer. Reply with exactly one JSON object and nothing else: {"answer": "..."}...
5
{ "type": "int" }
ma-modpow
train
math
easy
Compute 7^233 mod 19. Answer is one integer. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
11
{ "type": "int" }
ma-recurrence
train
math
medium
A sequence obeys a_n = 3 a_(n-1) + (-2) with a_0 = 2. Find a_8. Answer is one integer. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
6562
{ "type": "int" }
ma-set-int
train
math
medium
Set A = {12, 21, 29, 32, 35, 38, 50, 51, 58} Set B = {28, 29, 34, 38, 40, 47, 55, 63, 67} List the elements of A intersect B as comma-separated integers in ascending order (or 'none' if empty). Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text...
29,38
{ "type": "set" }
cy-cidr
train
cybersecurity
easy
Which of these addresses fall inside the network 10.20.0.0/22? 10.20.1.44 10.20.3.200 10.20.4.9 10.19.255.1 10.20.0.1 10.20.5.12 10.21.0.7 10.20.2.77 Answer with the count as one integer. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or...
4
{ "type": "int" }
cy-acl
train
cybersecurity
medium
A firewall evaluates rules top-down and stops at the first match: 1 deny tcp 10.0.0.0/8 any port 23 2 allow tcp 10.4.0.0/16 any port 22 3 deny tcp any any port 22 4 allow tcp 10.0.0.0/8 any any 5 deny any any any Packet: tcp 10.4.1.20 -> 172.16.5.5 port 22 Is it allowed or denied? Answer 'allow' or 'deny'....
allow
{ "type": "choice", "options": [ "allow", "deny" ] }
cy-b64
train
cybersecurity
easy
A config file contains this base64-encoded value: api_token = "cm90YXRlLWtleXMtcXVhcnRlcmx5" Decode it and answer with the plaintext string. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
rotate-keys-quarterly
{ "type": "string" }
cy-bruteforce
train
cybersecurity
medium
An authentication log shows: Oct 12 06:17:52 sshd[7447]: Failed password for svc-monitor from 198.51.100.94 port 25812 ssh2 Oct 12 23:49:39 sshd[6197]: Accepted password for www-data from 203.0.113.215 port 56287 ssh2 Oct 12 13:20:30 sshd[8168]: Failed password for svc-monitor from 198.51.100.231 port 33714 ssh2 Oct 1...
svc-monitor
{ "type": "string" }
cy-subnet
train
cybersecurity
easy
A subnet is configured as 192.168.44.0/26. How many usable host addresses does it have (excluding network and broadcast addresses)? Answer is one integer. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
62
{ "type": "int" }
me-srt-shift
train
media
easy
An SRT subtitle file has these cues: 1 00:00:04,200 --> 00:00:06,100 (cue text) 2 00:00:07,050 --> 00:00:09,400 (cue text) 3 00:00:11,300 --> 00:00:13,750 (cue text) Every cue must be shifted later by exactly 2.35 seconds. What is the new start timestamp of cue 2, in SRT format HH:MM:SS,mmm? Reply with exactly one JS...
00:00:09,400
{ "type": "string" }
me-ppm
train
media
medium
Here is a plain-text PPM (P3) image: P3 4 3 255 79 177 163 159 94 179 242 194 35 248 80 25 167 162 42 244 35 208 46 123 153 225 26 190 12 242 26 39 217 145 185 223 6 75 24 68 What is the mean value of the red channel across all pixels? Round to one decimal place; answer with just the number. Reply with exactly one JS...
143.4
{ "type": "num", "rel_tol": 0.005 }
me-readtime
train
media
easy
A script draft is 1140 words long. At a narration pace of 190 words per minute, how long is the read? Answer in M:SS format, rounded to the nearest second. Reply with exactly one JSON object and nothing else: {"answer": "..."}. Give only the value asked for, no units or extra text, inside the answer field.
6:00
{ "type": "string" }

Quant Desk — OpenEnv Arena dataset

Data for the Quant Desk OpenEnv environment: 36 deterministic, self-contained single-answer tasks spanning all eight Arena domains (software engineering, industrial & physical systems, natural science, office & white-collar work, finance & economics, math & formal reasoning, cybersecurity, media & content production).

What the environment teaches

Analyst-style precision: read a small self-contained brief (a log excerpt, a sensor table, an invoice plus correction memo, a firewall ruleset, an SRT file), compute the exact requested value, and reply with exactly one JSON object {"answer": "..."}. The action schema is a single answer string, which keeps episodes to one required turn and makes strict-reply format discipline part of the learned behavior. Up to three attempts are allowed per episode, with feedback between attempts.

How the reward works

Each step({"answer": ...}) is graded deterministically per task:

  • int — first integer in the answer must equal the gold integer
  • num — numeric match within rel_tol (full), 10x tol (0.5), 100x tol (0.2)
  • choice — normalized match against the gold option
  • set — token-set F1 against the gold set
  • json_fields — fraction of gold top-level fields present and equal
  • string — whitespace/case-normalized exact match

Step reward is that attempt's score. Episodes end on a perfect score or after 3 attempts; the terminal reward is the best attempt score, always in [0, 1].

Files

  • tasks.jsonl — the 36 task instances actually served by the image: task_id, split (all train), domain, difficulty, prompt, gold, grader (type + parameters)
  • gen_tasks.py — the generator that produced tasks.jsonl
  • env/ — full environment source (server, graders, models, openenv.yaml)
  • env-README.md — environment documentation

Provenance

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