# Praxis v0.1 cost rates — per-unit pricing for the cost logging (D-012, REQ-NFR-COST-01). # v0.1 logs actual per-session cost; no enforced ceiling (pilot). # Per G-005: these are pilot-config rates (Ollama tier + cloud), NOT at-scale # per-learner unit economics — the $3/learner target requires self-hosted # gemma4:e4b + Piper (post-pilot). # LLM role-play (gemma4:cloud) — Ollama tier (Pro plan amortized, pilot estimate). gemma4_cloud_per_1k_tokens_cents: 0.5 # Debrief + classifier (deepseek-v4-flash:cloud) — Ollama tier. deepseek_v4_flash_per_1k_tokens_cents: 1.0 # ASR (Deepgram Nova-3 streaming) — $0.0043/min → 0.43 cents/min. deepgram_per_audio_minute_cents: 0.43 # TTS (Cartesia Sonic cloud) — per-char pricing (pilot estimate). cartesia_per_1k_chars_cents: 3.0 # TTS (Piper self-hosted) — open-weights, $0 marginal cost. piper_per_1k_chars_cents: 0.0