chore(pricing): Update openai pricing

[siddharthsambharia-portkey]

🔄 Pricing Update: openai

📊 Summary (complete_diff mode)

Change Type	Count
➕ Models added	0
🔄 Models updated (merged)	24

🔄 Updated Models

• gpt-5-mini
• gpt-5-mini-2025-08-07
• gpt-5-nano
• gpt-5-nano-2025-08-07
• gpt-4.1
• gpt-4.1-2025-04-14
• gpt-4.1-nano
• gpt-4.1-nano-2025-04-14
• gpt-realtime-mini
• gpt-realtime
• gpt-realtime-2025-08-28
• gpt-4o-mini-realtime-preview
• gpt-4o-mini-realtime-preview-2024-12-17
• gpt-audio-mini
• gpt-audio
• gpt-audio-2025-08-28
• gpt-4o-audio-preview
• gpt-4o-mini-audio-preview-2024-12-17
• gpt-image-1.5
• gpt-image-1-mini
• gpt-image-1
• chatgpt-image-latest
• sora-2-pro
• o4-mini-deep-research-2025-06-26

Model-to-Pricing Mapping

Data Sources

• Models API: GET https://api.openai.com/v1/models — 128 models returned (ft:* excluded)
• Pricing Page: https://developers.openai.com/api/docs/pricing (Standard tier) — fetched via HTTP Range headers due to Cloudflare protection on platform.openai.com

Pricing Tiers Used

• Text models with short/long context: Short context pricing used as Standard tier (e.g., gpt-5.4: $2.50/$15.00 short vs $5.00/$22.50 long)
• Audio/Realtime: Both text token and audio token prices captured
• TTS (tts-1, tts-1-hd): Per-million-characters pricing
• Whisper: Per-minute pricing
• Sora: Per-second video pricing by resolution

Key Model Families

Family	Input ($/MTok)	Output ($/MTok)
gpt-5.4	2.50	15.00
gpt-5.4-mini	0.75	4.50
gpt-5.4-nano	0.20	1.25
gpt-5.4-pro	30.00	180.00
gpt-5.3/gpt-5.2	1.75	14.00
gpt-5.1/gpt-5	1.25	10.00
gpt-4.1	2.00	8.00
gpt-4o	2.50	10.00
o3	2.00	8.00
o4-mini	1.10	4.40

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Generated by Pricing Agent on 2026-04-14