WhichAI / Models / Claude Opus 4.8

Claude Opus 4.8

· verified July 26, 2026

public paid api in Generator coding agents reasoning

Provider

Statuspublic

AA Intelligence Index55.7 (July 16, 2026 snapshot)

Releasedn/a

Context window1M

Modalitiesn/a

API price $/1M (in / out)$5 / $25

Speedn/a

AccessClaude Pro $20/mo · API

In one line

#2 on the public AA snapshot and the leader in real-repo coding (SWE-bench Pro 69.2%). For serious software work, still the default answer.

Coding92

Reasoning88

Writing84

Agents & tools91

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

Alternatives worth a look

GPT-5.6 Terra (OpenAI) · AA 55Released July 9, 2026 · API $2.50/$15 per 1M tokens
GPT-5.5 (OpenAI) · AA 54.8Free (limited messages) · Plus $20/mo · Go ~$8/mo · API
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 4.8 vs Claude Fable 5 · Claude Opus 4.8 vs GPT-5.5 · Claude Opus 4.8 vs Kimi K3

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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).