GPT-5 was released by OpenAI on August 7, 2025, as a flagship model in the GPT line.
GPT-5 fixes 74.9% of real software bugs on SWE-bench Verified versus 69.1% for o3 and makes about 80% fewer factual errors on LongFact and FactScore prompts, with cheaper input but pricier output tokens.
Compared with o3 · the model it replaces
Fixes 3 in 4 real software bugs
SWE-bench Verified — fixing real bugs in real software projects
74.9%
▲ up from 69.1% · +5.8 points
Cheaper to send text in, pricier for the answers than o3
Price per 1M tokens — what developers pay, input / output
$1.25 / $10
was $2 / $8 · input 37.5% cheaper, output 25% pricier
Every Monday, only when something shipped: the AI models that came out, what each one changed, and which lines are due next.
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GPT-6.1 Sol is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Latest: GPT-6.1 Sol · Sep 29, 2026
Newest first. See the full line with every card →