WhichAI / Models / Claude Opus 4.8

Claude Opus 4.8

· verified October 14, 2026

public paid api in Generator coding agents reasoning

Provider

Statuspublic

AA Intelligence Index41.8 (official, read October 14, 2026)

Released2026-05-27

Context window1M

Modalitiesn/a

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

Speedn/a

AccessClaude Pro $20/mo · API

In one line

The leader on real-repo coding when it shipped (SWE-bench Pro 69.2%) and still a serious software workhorse, now at a price its successors undercut. Worth choosing deliberately rather than by default.

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

GLM-5.3-Flash (Z.ai) · AA 41.8Released August 26, 2026 · open weights under MIT · API $0.15/$0.50 per 1M tokens · free chat at chat.z.ai
GPT-5.6 Terra (OpenAI) · AA 42.1Released July 9, 2026 · API $2.50/$15 per 1M tokens
Ling 3.1 Flash (Ant Group) · AA 41.1API $0.075/$0.225 per 1M tokens on OpenRouter · listed October 2, 2026

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, official scale (the number published on artificialanalysis.ai), relayed by OpenRouter and refreshed automatically: last read October 14, 2026. 209 models carry a current official measurement. A value marked ~ is converted from an earlier snapshot because no current measurement is published; an unmeasured model is never ranked. Context, price, modality and listing dates come from the public OpenRouter model list (refreshed automatically on the live site; static copy retrieved October 3, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (the Ranking chapter and About > Methodology).