slopsubs

What a task really costs on a subscription

slopsubs: what a task really costs on a subscription

Effective cost vs intelligence

0102030405060$0.0003$0.001$0.003$0.01$0.03$0.1$0.3$1$3$10Intelligence indexEffective cost per task (USD, log scale)Opus 5.5GPT-6 AstraGPT-6.1 SolSonnet 5.5GPT-6.1 TerraGemini 4 ArgonFable 5.1Muse Spark 1.3Haiku 5.5GPT-6 Luna
  • API
  • Claude Ultra
  • ChatGPT Pro 200
  • OpenCode Go

Tasks per week on each plan

How many Intelligence Index tasks a plan's weekly cap pays for when spent on one model at one effort: the cap in API-priced dollars over the task's API price. A plan's rows are alternatives, not a sum, and bundled API credit is left out.

Published or measured capEstimated cap
Tasks a week (log scale)

Claude Ultra$2,769 a week at API pricesestimated cap

Theo: 60x the price, $12,000 a month of API-priced inference. Not measured yet.

Opus 5.5276–2.84K
Sonnet 5.5276–5.42K
Haiku 5.56.74K–63.3K
Fable 5.1· half the cap106–309

ChatGPT Pro 200$969 a week at API pricesestimated cap

Theo: 21x the price, $4,200 a month of API-priced inference. Not measured yet.

GPT-6 Astra155–681
GPT-6.1 Sol762–6K
GPT-6.1 Terra1.01K–13.6K
GPT-6 Luna6.38K–189K

OpenCode Goeach model's monthly allowance, per weekpublished cap

OpenCode's published monthly usage for each model, at list prices, with current promos, averaged over the weeks of a month

Gemini 4 Argon3.6
Haiku 5.58.4–79
GPT-6 Luna23–676

Effective cost per task, cheapest first

Each model on each selected plan, and at API prices when they are on, from low to max effort. Rows rank by their cheapest effort, so the top rows are the cheapest way to run a task at all.

API price, or a published or measured capEstimated cap
Effective cost per task (USD, log scale)
GPT-6 Luna· ChatGPT Pro 200$0.00024–$0.0072
Haiku 5.5· Claude Ultra$0.00072–$0.0067
GPT-6.1 Terra· ChatGPT Pro 200$0.0034–$0.046
GPT-6 Luna· OpenCode Go$0.0034–$0.1
GPT-6 Luna· API$0.0051–$0.15
GPT-6.1 Sol· ChatGPT Pro 200$0.0077–$0.061
Sonnet 5.5· Claude Ultra$0.0084–$0.16
Opus 5.5· Claude Ultra$0.016–$0.16
Haiku 5.5· OpenCode Go$0.029–$0.27
Haiku 5.5· API$0.044–$0.41
GPT-6 Astra· ChatGPT Pro 200$0.068–$0.3
GPT-6.1 Terra· API$0.071–$0.96
Fable 5.1· Claude Ultra$0.14–$0.42
GPT-6.1 Sol· API$0.16–$1.27
Sonnet 5.5· API$0.51–$10.02
Gemini 4 Argon· OpenCode Go$0.64
Opus 5.5· API$0.98–$10.04
GPT-6 Astra· API$1.42–$6.24
Muse Spark 1.3· API$2.39
Gemini 4 Argon· API$3.84
Fable 5.1· API$4.49–$13.04