Intelligence & cost · updated Oct 8, 2026
Intelligence 160: GPT-5.5 Pro-class AI
Intelligence 160 first arrived in Apr 2026 with GPT-5.5 Pro (OpenAI), at $67.50 per million tokens. Today 10 models from 2 labs reach it. The cheapest, GPT-6 Sol, costs $4: 17× cheaper.
First reached
Apr 2026
GPT-5.5 Pro, OpenAI · launch price $67.50
Available today
10 models
from 2 labs · 0 open-weight · 10 have ever reached it
Cheapest today
$4
GPT-6 Sol · 17× cheaper than at debut
Open-weight lag
not yet
no open-weight model reaches this level yet
| Model | Lab | Weights | ECI | Cheapest $ / M tokens | Via |
|---|---|---|---|---|---|
| GPT-6 Sol2026-09 | OpenAI · US | closed | ECI 162.7 | $4 | via Microsoft Azure |
| Claude Sonnet 5.52026-09 | Anthropic · US | closed | ECI 165.0 | $4 | via AWS Bedrock |
| GPT-6.1 Sol2026-09 | OpenAI · US | closed | ECI 166.1 | $4 | via Microsoft Azure |
| GPT-5.6 Sol2026-07 | OpenAI · US | closed | ECI 161.7 | $8 | via Microsoft Azure |
| Claude Opus 5.52026-09 | Anthropic · US | closed | ECI 167.3 | $8 | via AWS Bedrock |
| Claude Opus 52026-07 | Anthropic · US | closed | ECI 162.8 | $10 | via AWS Bedrock |
| Claude Fable 52026-06 | Anthropic · US | closed | ECI 162.1 | $20 | via AWS Bedrock |
| Claude Fable 5.12026-09 | Anthropic · US | closed | ECI 164.7 | $20 | via AWS Bedrock |
| GPT-6 Astra2026-09 | OpenAI · US | closed | ECI 166.4 | $20 | via Microsoft Azure |
| GPT-5.5 Pro2026-04 | OpenAI · US | closed | ECI 162.1 | $67.50 | via Microsoft Azure |
Source: A model reaches level 160 when its Epoch Capabilities Index estimate is at or above it. Prices are list prices per million tokens, blended 3:1 input to output. · Epoch Capabilities Index · LiteLLM price map · Launch price source