gpt-5.5-2026-04-23 vs deepseek-v4-pro
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
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in$5out$30cache$0.5–
Latency (24h)
Success Rate (24h)
Context Length1M
Reasoning
Providers1
ReleasedApr 2026
Knowledge Cutoff–
LicenseMIT License
Flagship Mixture-of-Experts model with 1.6T total parameters and 49B activated per token. Trained on 32T+ tokens with hybrid attention for efficient 1M context processing.
Input$1.7
Output$3.5
Latency (p50)6.9s
Output Limit384K
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in$1.7out$3.5cache$0.15write$1.7