gpt-5.5-2026-04-23 vs kimi-k2.6
Pricing, Performance & Features Comparison
OpenAI’s April 2026 frontier model and the recommended migration target for the o-series and GPT-5 generation.
Input$5
Output$30
Latency (p50)4.6s
Output Limit128K
Function Calling
JSON Mode
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InputText, Image
OutputText
in$5out$30cache$0.5–
Latency (24h)
Success Rate (24h)
Context Length262K
Reasoning
Providers1
ReleasedApr 2026
Knowledge CutoffApr 2025
LicenseMIT License
Mixture-of-Experts model with 1T total parameters and 32B activated per token. Features MLA attention, MoonViT vision encoder, and agent swarm orchestration.
Input$0.95
Output$4
Latency (p50)6.5s
Output Limit66K
Function Calling
JSON Mode
InputText, Image, Video
OutputText
in$0.95out$4cache$0.16write$0.95