AI Model Watch
Models / OpenAI

GPT-5.5

GA

Current flagship. Snapshot alias gpt-5.5-2026-04-23 (snapshot date taken as release date). Input/Text-only output, configurable reasoning effort. Pricing from developers.openai.com/api/docs/pricing (standard tier); batch tier is ~50% ($2.50/$0.25/$15.00).

Provider
OpenAI
Status
GA
Input price
$5 / 1M tokens
Output price
$30 / 1M tokens
Cached input
$0.5 / 1M tokens
Blended price
$11.25 / 1M tokens
Context window
1,050,000 tokens (1.1M)
Max output
128,000 tokens
Modality
text, image
Knowledge cutoff
2025-12-01
Released
23 Apr 2026
API string
gpt-5.5

Source: OpenAI official documentation ↗

See also

Compare GPT-5.5 with…

GPT-5.5 vs Claude Opus 4.8→

$11.25 vs $10 blended /M

GPT-5.5 vs Claude Opus 4.7→

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GPT-5.5 vs Claude Opus 4.6→

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GPT-5.5 vs Claude Opus 4.5→

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