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Scatter

AI Capability Against Price

Current models: Epoch Capabilities Index score against blended list price, $ per million tokens (log scale)

Claude Opus 5.5 scores highest: 166.8 at $8.00cheapest: Claude Haiku 5.5 at $0.20
YTD1y2y5y10y20yAll
Current·Data to Oct 22, 2026
AnthropicOpenAIGooglexAIDeepSeekAlibabaMoonshotZ.ai

Capability: Epoch AI’s Capabilities Index, which combines about forty benchmarks into one scale (CC BY 4.0). Price: each maker’s own API list price, three input tokens to one output token, from the LiteLLM price map (MIT). Lines trace each lab’s frontier: its best score at each price.

How much capability a dollar of AI buys. Each point is a current model from a major lab, placed by its benchmark score and its list price. The price axis is logarithmic: prices spread far wider than scores, so a cheap model a few points behind the leaders can be the better buy.

23 points

#ItemGroupECI score$ per million tokens
1Claude Opus 5.5Anthropic166.8$8.00
2GPT-6 AstraOpenAI166.4$20.00
3GPT-6.1 SolOpenAI166.3$4.00
4Claude Fable 5.1Anthropic164.7$20.00
5Gemini 4 ArgonGoogle164.6$4.00
6Claude Sonnet 5.5Anthropic164.5$4.00
7Claude Opus 5Anthropic162.6$10.00
8GPT-6 SolOpenAI162.6$4.00
9GPT-5.6 TerraOpenAI159.4$4.50
10Claude Haiku 5.5Anthropic159.0$0.20
11Kimi K3Moonshot157.4$6.00
12Gemini 3.8 FlashGoogle157.2$1.50
13Claude Sonnet 5Anthropic156.4$4.00
14GPT-5.6 LunaOpenAI156.3$0.45
15GPT-6 LunaOpenAI156.3$0.20

What this chart reads·23 series

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Sources·23 sources

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Claude Opus 5.5 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Claude Sonnet 5.5 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Claude Haiku 5.5 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Claude Fable 5.1 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Claude Opus 5 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Claude Sonnet 5 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GPT-6.1 Sol Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GPT-6 Astra Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GPT-6 Sol Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GPT-6 Luna Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GPT-5.6 Terra Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GPT-5.6 Luna Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Gemini 4 Argon Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Gemini 3.8 Flash Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Gemini 3.5 Flash-Lite Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Grok 4.7 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Grok 4.6 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

DeepSeek V4 Pro Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

DeepSeek V4 Flash Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Qwen 3.8 Max Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Kimi K3 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GLM-5.3 Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

GLM-5.3 Flash Capability Score (Epoch Capabilities Index). Source: Epoch AI, Epoch Capabilities Index (epoch.ai/eci), eci_scores.csv in the benchmark_data.zip bundle. Licensed CC BY 4.0: "Epoch AI's data is free to use, distribute, and reproduce provided the source and authors are credited." Refreshed weekly by Palanor's epoch-sync job.

Charts are drawn from Palanor's signal library and recomputed from source data on every view. Transformations (changes, indexing, year-on-year rates) are Palanor's.

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