Grok 4.3 review, price and benchmarks (2026)

public paid api in Generator reasoning

Provider

Statuspublic

AA Intelligence Index37.6 (July 16, 2026 snapshot)

Releasedn/a

Context windown/a

Modalitiesn/a

API price $/1M (in / out)n/a

Speedn/a

Accessgrok.com paid tiers · API

In one line

Spring-2026 generation - a solid step over Grok 4.1 on reasoning, now overshadowed by 4.5.

Coding66

Reasoning68

Writing60

Agents & tools64

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

Alternatives worth a look

Nemotron 3 Ultra (NVIDIA) · AA 37.8FREE on OpenRouter (nvidia/nemotron-3-ultra-550b-a55b:free - WhichAI default runner) · open weights · Perplexity Pro
MiniMax M2.7 (MiniMax) · AA 38.1Open weights · API hosts
GPT-5.4 nano (OpenAI) · AA 38.2API (cheapest OpenAI tier)

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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).