Benchmark AI_TRUECOST_

real AI cost, not vanity metrics

Follow on X updates & details

gpt-6.1-sol

Running gpt-6.1-sol inside codex.

FastAPI: Add POST /api/v1/projects/{project_id}/tasks endpoint Plan → Review plan → Execute → Review & fix → Open PR → Verify PR → Verify e2e

All steps run as one workflow, inside a single Docker container.

Swipe to view more

5 of the 10 steps are agent sessions, each started fresh: only the repository working tree and the previous step's output carry over. Host steps orchestrate and verify, and cost nothing.
# Step Kind What happens
1 pullIssue host Fetches the GitHub issue and creates a branch
2 plan agent Drafts a plan from the ticket, including tests
3 reviewPlan agent Always runs; returns the full final plan
4 execute agent Implements the landing page; may run repeated preview captures; no harness step timeout
5 reviewAndCorrect agent Visual review against the brief and reference render; fixes layout and copy; no harness step timeout
6 openPullRequest agent Commits, pushes, opens a pull request into main
7 verifyPullRequest host Checks that the exact pull request is open
8 verifyPullRequestCheck host Waits for the required end-to-end check to pass
9 summarizeUsage host Totals tokens and cost
10 score host Records the final result
Speed
Reasoning
Run 5 2026-10-08 · standard · high $0.94 PASS

Steps

Swipe to view more

Agent steps start a fresh session. Host steps are included in the run cost.
Step Status Cost Time In tok Out tok Tools
pullIssue succeeded $0.00 — 0 0 0
plan succeeded $0.05 0m 47s 204 2,067 2
reviewPlan succeeded $0.07 1m 07s 204 3,258 2
execute succeeded $0.36 5m 52s 884 20,088 12
reviewAndCorrect succeeded $0.29 4m 14s 1,088 13,020 15
openPullRequest succeeded $0.16 1m 44s 884 4,814 12
verifyPullRequest succeeded $0.00 0m 01s 0 0 0
verifyPullRequestCheck succeeded $0.00 0m 22s 0 0 0
summarizeUsage succeeded $0.00 — 0 0 0
score succeeded $0.00 — 0 0 0

Run totals

Cost
$0.94
Agent time
13m 45s
Input tokens
3,264
Output tokens
43,247
Cache-read tokens
1,110,645
Tool calls
43

Tool call mix

command_execution
40
file_change
3
Run 4 2026-10-07 · standard · high $0.93 PASS

Steps

Swipe to view more

Agent steps start a fresh session. Host steps are included in the run cost.
Step Status Cost Time In tok Out tok Tools
pullIssue succeeded $0.00 — 0 0 0
plan succeeded $0.05 0m 47s 201 2,089 2
reviewPlan succeeded $0.07 1m 09s 203 3,189 2
execute succeeded $0.36 5m 57s 898 19,868 12
reviewAndCorrect succeeded $0.29 4m 18s 1,093 12,728 15
openPullRequest succeeded $0.16 1m 46s 862 4,783 12
verifyPullRequest succeeded $0.00 0m 01s 0 0 0
verifyPullRequestCheck succeeded $0.00 0m 20s 0 0 0
summarizeUsage succeeded $0.00 — 0 0 0
score succeeded $0.00 — 0 0 0

Run totals

Cost
$0.93
Agent time
13m 56s
Input tokens
3,257
Output tokens
42,657
Cache-read tokens
1,112,255
Tool calls
43

Tool call mix

command_execution
40
file_change
3
Run 3 2026-10-07 · standard · high $0.94 PASS

Steps

Swipe to view more

Agent steps start a fresh session. Host steps are included in the run cost.
Step Status Cost Time In tok Out tok Tools
pullIssue succeeded $0.00 — 0 0 0
plan succeeded $0.05 0m 47s 199 2,059 2
reviewPlan succeeded $0.07 1m 06s 201 3,246 2
execute succeeded $0.37 5m 45s 868 20,391 12
reviewAndCorrect succeeded $0.29 4m 16s 1,113 12,964 15
openPullRequest succeeded $0.16 1m 42s 900 4,779 12
verifyPullRequest succeeded $0.00 0m 01s 0 0 0
verifyPullRequestCheck succeeded $0.00 0m 20s 0 0 0
summarizeUsage succeeded $0.00 — 0 0 0
score succeeded $0.00 — 0 0 0

Run totals

Cost
$0.94
Agent time
13m 36s
Input tokens
3,281
Output tokens
43,439
Cache-read tokens
1,118,401
Tool calls
43

Tool call mix

command_execution
40
file_change
3
Run 2 2026-10-07 · standard · high $0.93 PASS

Steps

Swipe to view more

Agent steps start a fresh session. Host steps are included in the run cost.
Step Status Cost Time In tok Out tok Tools
pullIssue succeeded $0.00 — 0 0 0
plan succeeded $0.05 0m 47s 199 2,102 2
reviewPlan succeeded $0.07 1m 08s 203 3,309 2
execute succeeded $0.36 5m 45s 868 19,672 12
reviewAndCorrect succeeded $0.29 4m 09s 1,109 12,781 15
openPullRequest succeeded $0.16 1m 44s 887 4,700 12
verifyPullRequest succeeded $0.00 0m 01s 0 0 0
verifyPullRequestCheck succeeded $0.00 0m 22s 0 0 0
summarizeUsage succeeded $0.00 — 0 0 0
score succeeded $0.00 — 0 0 0

Run totals

Cost
$0.93
Agent time
13m 34s
Input tokens
3,266
Output tokens
42,564
Cache-read tokens
1,122,800
Tool calls
43

Tool call mix

command_execution
41
file_change
2
Run 1 2026-10-07 · standard · high $0.93 PASS

Steps

Swipe to view more

Agent steps start a fresh session. Host steps are included in the run cost.
Step Status Cost Time In tok Out tok Tools
pullIssue succeeded $0.00 — 0 0 0
plan succeeded $0.05 0m 48s 205 2,113 2
reviewPlan succeeded $0.07 1m 07s 208 3,329 2
execute succeeded $0.36 5m 55s 882 19,690 12
reviewAndCorrect succeeded $0.28 4m 19s 1,102 12,775 15
openPullRequest succeeded $0.16 1m 46s 878 4,825 12
verifyPullRequest succeeded $0.00 0m 01s 0 0 0
verifyPullRequestCheck succeeded $0.00 0m 22s 0 0 0
summarizeUsage succeeded $0.00 — 0 0 0
score succeeded $0.00 — 0 0 0

Run totals

Cost
$0.93
Agent time
13m 56s
Input tokens
3,275
Output tokens
42,732
Cache-read tokens
1,116,125
Tool calls
43

Tool call mix

command_execution
38
file_change
5