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⚡ Realtime Chat / Voice frontier

As of October 25, 2026, the highest Realtime Chat / Voice score on this frontier is GPT-5.6 Terra Pro at 96.7, with an estimated monthly cost of $1,200.00.

A streaming consumer chat or voice assistant. Speed and time-to-first-token matter as much as raw quality — a slightly less smart model that responds instantly often beats a frontier model that pauses to think.

The y axis is this scenario's weighted score; the x axis starts at estimated monthly cost for 20,000 requests a day. Switch axes to compare against speed, latency or context. See the full ranking.

On the frontier

Models on the Pareto frontier, highest score first
ModelScoreEst. $/month
GPT-5.6 Terra ProOpenAI96.7$1,200
GLM 5Zhipu AI (GLM)73.7$864
Claude Haiku 5.5Anthropic65.6$108
Llama 3.3 70B InstructMeta56.0$86
DeepSeek V4 Flash 0423DeepSeek52.8$66
Qwen3.5-FlashAlibaba (Qwen)50.8$62
Gemini 2.5 Flash LiteGoogle48.6$48
Gemma 3 12BGoogle46.0$42
DeepSeek V4 Flash 0731DeepSeek45.6$41
Qwen3.7 FlashAlibaba (Qwen)45.3$30
Gemma 3 4BGoogle43.1$25
gpt-oss-20bOpenAI41.9$19