GPT-5 review, price and benchmarks (2026)

legacy paid api

Provider

Statuslegacy

AA Intelligence Index34.7 (July 16, 2026 snapshot)

Releasedn/a

Context windown/a

Modalitiesn/a

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

Speedn/a

AccessAPI (legacy)

In one line

The model that unified the GPT-4/o-series era in August 2025. Historically important; superseded several times since.

Coding60

Reasoning58

Writing60

Agents & tools52

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

Alternatives worth a look

Kimi K2.5 (Moonshot AI) · AA 35.4Open weights · API hosts
Qwen3.5 397B (Alibaba) · AA 33.7Open weights (Apache 2.0)
Claude Sonnet 4.6 (Anthropic) · AA 35.9Claude Pro · API

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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).