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GPT Astra

#5of 28 · general

GPT-6 Astra

1.1Mcontext
$10 / $50per 1M in / out
2026-09-03released
2026-04-30knowledge cutoff
50100Coding 84 · #4 of 28Agents 73 · #7 of 29Cyber 30 · #10 of 24Engineering 85 · #3 of 26Math 81 · #4 of 26Health 73 · #4 of 24Legal 64 · #7 of 27Professional 61 · #9 of 28Writing 66 · #4 of 21Instruct 66 · #6 of 25Hallucination 81 · #1 of 26Multimodal 81 · #2 of 24
Coding84#4
Agents73#7
Cyber30#10
Engineering85#3
Math81#4
Health73#4
Legal64#7
Professional61#9
Writing66#4
Instruct66#6
Hallucination81#1
Multimodal81#2

History

ECI100120140160180Jan 2024Jan 2025Jan 2026GPT-5.6 Luna · $0.2/M in · 2026-07-09 · still served · Epoch Capabilities Index 156.5 ECI pointsGPT-5.6 Terra · $2/M in · 2026-07-09 · still served · Epoch Capabilities Index 160.1 ECI pointsGPT-6 Luna · $0.1/M in · 2026-09-22 · still served · Epoch Capabilities Index 156.8 ECI pointsGPT-6 Sol · $2/M in · 2026-09-22 · still served · Epoch Capabilities Index 163.7 ECI pointsGPT-6.1 Sol · $2/M in · 2026-09-29 · still served · Epoch Capabilities Index 168.4 ECI pointsgpt-3.5-turbo-0613 · no price on record · 2023-06-13 · retired 2024-09-13 · Epoch Capabilities Index 113.2 ECI pointsgpt-4-0613 · $30/M in · 2023-06-13 · still served · Epoch Capabilities Index 123.1 ECI pointsgpt-3.5-turbo-1106 · no price on record · 2023-11-06 · still served · Epoch Capabilities Index 118.5 ECI pointsgpt-3.5-turbo-0125 · no price on record · 2024-02-01 · still served · Epoch Capabilities Index 115.6 ECI pointsGPT-4 Turbo · $10/M in · 2024-04-09 · still served · Epoch Capabilities Index 127.3 ECI pointsGPT‑4o · $5/M in · 2024-05-13 · still served · Epoch Capabilities Index 129.0 ECI pointsgpt-4o-2024-08-06 · $2.5/M in · 2024-08-06 · still served · Epoch Capabilities Index 128.8 ECI pointsgpt-4o-2024-11-20 · no price on record · 2024-11-20 · still served · Epoch Capabilities Index 128.8 ECI pointsGPT‑4.5 · $75/M in · 2025-02-27 · still served · Epoch Capabilities Index 136.8 ECI pointsGPT‑4.1 · $2/M in · 2025-04-14 · still served · Epoch Capabilities Index 136.8 ECI pointsGPT‑5 · $1.25/M in · 2025-08-07 · still served · Epoch Capabilities Index 150.0 ECI pointsGPT‑5.1 · $1.25/M in · 2025-11-12 · still served · Epoch Capabilities Index 149.7 ECI pointsGPT‑5.2 · $1.75/M in · 2025-12-11 · still served · Epoch Capabilities Index 153.5 ECI pointsGPT‑5.4 · $2.5/M in · 2026-03-05 · still served · Epoch Capabilities Index 156.9 ECI pointsGPT‑5.5 · $5/M in · 2026-04-23 · still served · Epoch Capabilities Index 159.1 ECI pointsGPT‑5.6 Sol · $5/M in · 2026-07-09 · still served · Epoch Capabilities Index 161.8 ECI pointsGPT‑6 Astra · no price on record · 2026-09-03 · still served · Epoch Capabilities Index 166.6 ECI points6.1 Sol6 Luna6 Sol5.6 Luna5.6 Sol5.55.45.25.154.14.52006GPT‑4o4 Turbo0125110606130613
  • OpenAI
  • older → newer
  • retired
$ / M input tokens22 of 176 priced models · price is a third-party claim, not a vendor quote

Effort

GPT-6 Astra
% of best score4060801000.5×0.7×1×1.5×× the best effort’s cost · log scaleNoneLowMedHighXhighMax

Measured

≈ imputed · amber dot = lab-self-reported among the sources
GPQA Diamond95.9%#2Epoch AILLM Stats
HLE54.7%#4Artificial AnalysisEpoch AI
LiveBench82.2%#3LiveBench
SciCode56.5%#14Artificial AnalysisEpoch AI
CritPt31.7%#2Artificial AnalysisEpoch AI
Terminal-Bench87.3%#2Vals.ai
APEX Agents64.7%#5Epoch AI
GDPval53.6%#17Artificial Analysis
Arena1475#12Arena
AA Index52.7#6Artificial Analysis
Vals Index63.1#6Vals.ai
Epoch Capabilities Index168.8#2Epoch AI

Neighbors

Claude Opus→ stronger professional · cheaperGPT Sol→ cheaperKimi→ weaker multimodal · cheaperClaude Sonnet→ less factual · cheaperClaude Fable→ less factual