OpenAI

GPT-6 Astra

Under evaluation

Same model as GPT-6 Astra in Language Models, listed again here because it’s used as a coding model and scored on that rubric. It counts once in the directory’s totals.

Maker
OpenAI
Origin
United States
Released
Sep 3, 2026
Category
Coding & Agentic

Strengths & weaknesses

  • Rated #1 of 128 models on LMArena’s WebDev arena, where people judge working web apps — 42 points clear of the next model
  • A 1,050,000-token context window, so a large codebase fits in one pass
  • No result yet on SWE-bench Verified’s standard harness, so its skill at fixing real repository issues isn’t measured here
  • Priced at the top of the market, at about $20 per million tokens blended

Evaluation

In assessment · 55% measured

Scored on GPT 6 Astra (Max) · sources as of Nov 4, 2026

  • Code qualityw45—

    No independent measurement yet

  • Web developmentw409.5

    Rule B1,773 rating (95% 1,764–1,783) from 7,210 votes · Scale 1,050–1,800, 0 to 10 · LMArena WebDev arena (gpt-6-astra-max) · Oct 28, 2026

  • Codebase contextw1510.0

    Rule B1,050,000 tokens · Scale 8,192–1,048,576 tokens, 0 to 10 · OpenRouter, context window · Nov 4, 2026

Price & availability

Measured the same way, deliberately kept out of the score: what a model costs doesn’t change what it can do.

w = weight, each criterion’s share of the overall score. Missing marks don’t count for or against. How scoring works

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