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Frontier Index
Claude Opus 5.5 (Max, Default Fallback)57.6 INT$8
Claude Sonnet 5.5 (Max, Default Fallback)56 INT$4
Claude Opus 5.5 (Xhigh, Default Fallback)56 INT$8
Claude Opus 5.5 (High, Default Fallback)53.6 INT$8
Claude Fable 5.1 (Max, Default Fallback)53.4 INT$20
Claude Fable 5.1 (Xhigh, Default Fallback)53.2 INT$20
GPT-6 Astra (Max)52.7 INT$20
Gemini 4 Argon (High)52.6 INT$4
Claude Opus 5.5 (Max, Default Fallback)57.6 INT$8
Claude Sonnet 5.5 (Max, Default Fallback)56 INT$4
Claude Opus 5.5 (Xhigh, Default Fallback)56 INT$8
Claude Opus 5.5 (High, Default Fallback)53.6 INT$8
Claude Fable 5.1 (Max, Default Fallback)53.4 INT$20
Claude Fable 5.1 (Xhigh, Default Fallback)53.2 INT$20
GPT-6 Astra (Max)52.7 INT$20
Gemini 4 Argon (High)52.6 INT$4

Western labs · 5 tracked

Frontier AI Overview

Every frontier lab, model release and announcement in one place. 

Token Volume Share

~30%

OpenRouter, mid-2026

VENTURE FUNDING

$255.5B

PitchBook, Q1 2026

Infrastructure Investment

$725B

US hyperscalers, 2026

Lab Activity Index

western · last 7 days
  • 01OpenAI released 5 models this week, including GPT-6.1 Sol (Max) and GPT-6.1 Sol (Xhigh).
  • 02Anthropic released 5 models this week, including Claude Sonnet 5.5 (Max, Default Fallback) and Claude Sonnet 5.5 (Xhigh, Default Fallback).
  • 03Google DeepMind released Gemini 4 Argon (High) this week.

Fundraising

data byFundable

Largest raises · last 7 days

Model Leaders

benchmarks byArtificial Analysis

Best Overall

Claude Opus 5.5 (Max, Default Fallback)Anthropic57.6intelligence index

Best in Coding

Claude Fable 5.1 (Max, Default Fallback)Anthropic81.6coding index

Fastest

Gemini 3.5 Flash-LiteGoogle DeepMind334.9 t/smedian output speed

Cost Efficient

Llama 3.1 Instruct 8BMeta AI$0.03blended $/1M · best index per $

Largest Context

Llama 4 ScoutMeta AI10M tokenscontext window · lab spec

Latest Feed

TechCrunch · The Verge · VentureBeat · more

Top Models Currently

index byArtificial Analysis

#1 · Anthropic

Claude Opus 5.5 (Max, Default Fallback)

57.6

index

Released
2026-09-22
Coding
—
Speed
97.3 t/s
$/1M
$8

#2 · Anthropic

Claude Sonnet 5.5 (Max, Default Fallback)

56

index

Released
2026-09-28
Coding
—
Speed
140.5 t/s
$/1M
$4

#3 · Anthropic

Claude Opus 5.5 (Xhigh, Default Fallback)

56

index

Released
2026-09-22
Coding
—
Speed
77.3 t/s
$/1M
$8

#4 · Anthropic

Claude Opus 5.5 (High, Default Fallback)

53.6

index

Released
2026-09-22
Coding
—
Speed
76.3 t/s
$/1M
$8

#5 · Anthropic

Claude Fable 5.1 (Max, Default Fallback)

53.4

index

Released
2026-09-01
Coding
81.6
Speed
70.7 t/s
$/1M
$20