WhichAI / Models / Grok 4.5

Grok 4.5

· verified September 8, 2026

public paid api in Generator coding agents value

Provider

Statuspublic

AA Intelligence Index55.8 (September 8, 2026 snapshot)

Released2026-07-08

Context windown/a

Modalitiesn/a

API price $/1M (in / out)$2 / $6

Speed~80 tok/s, high token efficiency

AccessReleased July 8, 2026 · API $2/$6 per 1M tokens · in Grok Build & Cursor · not yet in the EU

In one line

xAI's first model built specifically for coding and agents: a 1.5T-parameter base trained on real Cursor sessions, at a fraction of flagship prices. Note before you commit: EU availability is still pending.

Coding89

Reasoning84

Writing74

Agents & tools90

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

Alternatives worth a look

Gemini 3.7 Flash (Google) · AA 56Released August 13, 2026 · API $0.75/$3.75 per 1M tokens (introductory, doubles Jan 1, 2027) · model id gemini-3.7-flash · free-tier availability not confirmed
GPT-5.5 (OpenAI) · AA 56.3Free (limited messages) · Plus $20/mo · Go ~$8/mo · API
Claude Sonnet 5 (Anthropic) · AA 55.3FREE tier of claude.ai · API

Head-to-head: Grok 4.5 vs GPT-5.6 Terra

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Artificial Analysis Intelligence Index, 2026 rebased scale (top models ~ 55-66). Snapshot: September 4, 2026 (BenchLM mirror), retrieved September 8, 2026. Specs and prices come from the OpenRouter public model list on the same date. Models nobody has measured carry no index score at all and never enter a ranking: where an estimate exists it is shown separately and labelled unmeasured. Context, price, modality and release dates come from the public OpenRouter model list (retrieved September 8, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (Model guide and About > Methodology).