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Benchmarks › OpenAI › GPT
OpenAIclosed weightsCurrentReasoning

GPT-6 Astra

OpenAI's frontier tier; 128K max output; 2x input price above 272K.

Released
Sep 3, 2026
Price in / out
$10 / $50
Blended $/1M
$20
Context
1.05M

Benchmark scoresvs GPT-5.6 Terra

BenchmarkScoreRank (current)Source
Terminal-Bench 2.1
87.3%#2 of 22benchlm.ai ↗
GPQA Diamond
96%#1 of 21benchlm.ai ↗
Humanity's Last Exam
54.7%#4 of 31artificialanalysis.ai ↗
ARC-AGI-2
95%#1 of 9benchlm.ai ↗
Artificial Analysis Intelligence Index
53#6 of 16venturebeat.com ↗

GPT versions

Timeline
Version$ in / outTerminal-BenchSWE-benchGPQAHLEARC-AGI-2τ²-bench
GPT-4oRetired$2.5 / $10—————25.1%
o1Retired$15 / $60—————62.6%
o3-miniRetired$1.1 / $4.4—49.3%———28.7%
GPT-4.1Superseded$2 / $8—54.6%———47.1%
o3Superseded$2 / $8—69.1%———80.7%
GPT-5Superseded$1.25 / $10—74.9%85.7%——84.8%
GPT-5.1Superseded$1.25 / $10—————81.9%
GPT-5.2Superseded$1.75 / $14—80%——52.9%84.8%
GPT-5.3 CodexSuperseded$1.75 / $14—85%———86%
GPT-5.4Superseded$2.5 / $15——92.8%39.8%73.3%98.9%
GPT-5.5Superseded$5 / $3076.4%—93.6%41.4%85%98%
GPT-5.5 ProSuperseded$30 / $180———43.1%84.2%—
GPT-5.6 LunaSuperseded$0.2 / $1.279%—92.3%—59.5%—
GPT-5.6 SolSuperseded$5 / $3085.8%—94.6%—92.5%85.1%
GPT-5.6 TerraSuperseded$2 / $1277.5%—92.9%—83.9%86.3%
GPT-6 Astra$10 / $5087.3%—96%54.7%95%—
GPT-6 Luna$0.1 / $0.573%——38.5%59.3%—
GPT-6 SolSuperseded$2 / $1083.1%——47.9%89.6%—
GPT-6.1 Sol$2 / $10———52.9%94.2%—