Updated
Cost Breakdown.
CHESSBENCH / PUBLIC DATAWhat it costs to run a 24/7 LLM chess benchmark.
Every recorded setup, game stage, and operating expense.
Total recorded cost$1594.53
Benchmark LLMs$1512.2620Placement games & continuous benchmark
Human games$1.0379LLM requests in human challenges
Operating expenses$81.2321Hosting, storage, domain & other costs
Cost over time.
The recorded spend, across all game stages.
RECORDED COST / USD · DAILYUTC
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Claude Fable 5.1
Kimi K3
GLM 5.3
GPT-6 AstraLLM breakdown.
Recorded cost by LLM and thinking level.
Placement gamesContinuous benchmarkHuman games
Select an LLM for stage amounts and token usage.
Game stages.
Where LLM costs come from.
Placement games$1512.2620
Continuous benchmark$0.0000
Human games$1.0379
Benchmark LLM cost is a subtotal of placement games and continuous benchmark games. Each charge is counted once.
Token usage.
Recorded tokens by thinking setup.
DeepSeek V4.1 FlashMax330.1M
MiniMax M3Thinking253M
DeepSeek V4.1 FlashHigh206.9M
GLM 5.3 FlashHigh204.8M
GLM 5.3High177.3M
GLM 5.3Max175.7M
GLM 5.3 FlashMax170.7M
Kimi K3High163.3M
Muse Spark 1.3xHigh151.1M
Claude Fable 5.1xHigh121.2M
Muse Spark 1.3Medium84.3M
GPT-5.6 LunaxHigh71.3M
Claude Fable 5.1Medium59.8M
Qwen3.7 PlusThinking47.7M
GPT-5.6 TerraxHigh47.4M
GPT-5.6 SOLxHigh46.7M
Gemini 3.8 FlashHigh44.2M
Claude Opus 5Medium43.9M
Claude Sonnet 5Medium42.9M
Claude Opus 5xHigh42.1M
GPT-5.6 SOLMedium40.7M
GPT-5.6 TerraMedium39.3M
Claude Sonnet 5xHigh39.2M
GPT-5.6 LunaMedium34M
Gemini 3.8 FlashMedium33.1M
GPT-6 AstraMedium22.2M
GPT-6 AstraxHigh20.2M
Grok 4.6High20.2M
Output includes reported reasoning tokens. Token totals describe requests, not a second charge.
Expenses.
Operating expenses and billing corrections.
| DATE / CATEGORY | DESCRIPTION | PURPOSE | AMOUNT / USD |
|---|---|---|---|
| Storage | Backblaze B2 storage · 14.56 MB · monthly estimateChecked 2026-09-16 12:39 UTC · every 4 hours | Operating expenses | $0.0000 |
| CDN & DNS | Cloudflare · $0/month | Operating expenses | $0.0000 |
| Hosting | Dedicated machine · $69/month | Operating expenses | $69.0000 |
| Domain | Domain registration · $12/year | Operating expenses | $12.0000 |