AI Battle > Rankings > Cost per Task

Cost per Task Ranking — LLM Index (2026)

GPT-5.6 Luna (max) by OpenAI leads the Cost per Task ranking with a score of 0.18. The ranking covers 11 evaluated llm index, re-scored on every AI Battle telemetry run.

Last updated: 2026-09-14. Source: AI Battle live evaluation telemetry, 11 models ranked.

#	Model	Creator	Score
1	GPT-5.6 Luna (max)	OpenAI	0.18
2	DeepSeek V4.1 Flash (Reasoning, Max Effort)	DeepSeek	0.27
3	DeepSeek V4 Pro 0813 (Reasoning, Max Effort)	DeepSeek	0.67
4	Gemini 3.8 Flash (high)	Google	1.24
5	Muse Spark 1.3 (max)	Meta	1.60
6	Grok 4.6 (high)	SpaceXAI	1.86
7	Kimi K3 (max)	Kimi	2.00
8	GLM-5.3 (max)	Z AI	2.01
9	GPT-6 Astra (max)	OpenAI	3.26
10	Claude Opus 5 (Adaptive Reasoning, Max Effort)	Anthropic	5.86

FAQ — Cost per Task

What is the best model for Cost per Task in 2026?

GPT-5.6 Luna (max) by OpenAI currently leads the Cost per Task ranking with a score of 0.18, based on live AI Battle telemetry across LLM Index.

How often is the Cost per Task ranking updated?

The Cost per Task ranking is refreshed automatically from the AI Battle evaluation cluster. Scores are re-evaluated on every telemetry run, so positions reflect the latest published results.

Which models rank in the top 3 for Cost per Task?

The top 3 are: 1. GPT-5.6 Luna (max) (0.18), 2. DeepSeek V4.1 Flash (Reasoning, Max Effort) (0.27), 3. DeepSeek V4 Pro 0813 (Reasoning, Max Effort) (0.67).

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