OpenAIGPT-5.5 Pro: Product update
GPT-5.5 Pro: Product update. First seen 15 Sep 2026 Catalogues list a 1,050,000 tokens context window. 9 evidence links.
Facts as of
- Context window
- 1,050,000
- Max output
- 128,000
- Input
- text · image
- Output
- text
Alex's take
Alex has not commented on this signal yet. When Alex posts about a signal, the post appears here and on the home page beside it.
Evidence links 9
- VoxelBench · leaderboardevidence linkvoxelbench.ai
- OpenCode · discoveryevidence linkopencode.ai
- Artificial Analysis · benchmarksevidence linkartificialanalysis.ai
- OpenRouterevidence linkopenrouter.ai
- OpenRouterevidence linkopenrouter.ai
- Vercel AI Gatewayevidence linkvercel.com
- OpenAI · pricingevidence linkdevelopers.openai.com
- models.dev · catalogueevidence linkmodels.dev
- models.dev · catalogueevidence linkmodels.dev