WhichAI / Models / Claude Opus 5

Claude Opus 5

· verified July 26, 2026

public paid api in Generator reasoning coding agents long-context

Provider

Statuspublic

AA Intelligence Index60.7 (July 16, 2026 snapshot)

Released2026-07-24

Context window1M

ModalitiesText + vision

API price $/1M (in / out)$5 / $25 · cache hits $0.50/M; Batch -50%; 128K output

Speedn/a

AccessReleased July 24, 2026 · Claude Pro / Max plans · API $5/$25 per 1M tokens (Fast mode $10/$50)

In one line

Anthropic's fourth release in two months and the new overall #1: tops the AA Intelligence Index (60.7) and the Agentic Index (55.3) with 1M context, default thinking and computer use, at unchanged Opus pricing. Near-Fable quality at half the price.

Coding93

Reasoning94

Writing88

Agents & tools95

Category scores (0-100) are WhichAI blended ratings: public category leaderboards plus editorial judgment. Guidance, not official measurements.

Alternatives worth a look

Claude Fable 5 (Anthropic) · AA 59.9Claude Pro / Max plans (usage credits since July 7) · API $10/$50 per 1M tokens
GPT-5.6 Sol (OpenAI) · AA 58.9Released July 9, 2026 (rolling out) · API $5/$30 per 1M tokens · up to 750 tok/s on Cerebras
Kimi K3 (Moonshot AI) · AA 57.1API $3/$15 per 1M tokens ($0.30 cached) · kimi.com chat · open weights announced for July 27 (Modified MIT)

Head-to-head: Claude Opus 5 vs Claude Fable 5 · Claude Opus 5 vs GPT-5.6 Sol

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Artificial Analysis Intelligence Index, 2026 rebased scale (top models ≈ 55–60). Snapshot: July 24, 2026 (BenchLM mirror), retrieved July 26, 2026. Context, price and release data come from vendor pages and public pricing mirrors (retrieved July 19, 2026). Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (Model guide and About > Methodology).