chore(pricing): Update openai pricing

[siddharthsambharia-portkey]

🔄 Pricing Update: openai

📊 Summary (complete_diff mode)

Change Type	Count
➕ Models added	0
🔄 Models updated (merged)	20

🔄 Updated Models

• gpt-4.1-nano
• gpt-4.1-nano-2025-04-14
• codex-mini-latest
• o4-mini-deep-research-2025-06-26
• gpt-realtime
• gpt-realtime-2025-08-28
• gpt-realtime-mini
• gpt-4o-mini-realtime-preview
• gpt-4o-mini-realtime-preview-2024-12-17
• gpt-audio-mini
• gpt-4o-audio-preview
• gpt-4o-mini-audio-preview-2024-12-17
• gpt-4o-mini-tts
• gpt-4o-transcribe
• gpt-4o-mini-transcribe
• whisper-1
• gpt-image-1
• gpt-image-1-mini
• gpt-image-1.5
• chatgpt-image-latest

Model Coverage (129 models across 6 batches)

Batch	Family	Count
1	GPT-5.4, GPT-5.3, GPT-5.2 families	25
2	GPT-5.1, GPT-5, GPT-5 pro/search variants + GPT-4.1 family + GPT-4o	25
3	O-series (o1, o3, o4-mini, deep-research) + GPT-4 legacy	25
4	Realtime/Audio models (gpt-realtime, gpt-audio, gpt-4o-realtime, gpt-4o-audio)	22
5	TTS, Transcription, Whisper, Embeddings, Moderation, Legacy GPT-3.5	24
6	Image generation (DALL-E 2/3, GPT-Image 1/1.5/Latest) + Sora video	8

Pricing Sources

• Models API: https://api.openai.com/v1/models (128 models returned, ft:* excluded)
• Pricing Page: https://platform.openai.com/docs/pricing (Standard tier, scraped fresh with maxAge: 0)

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Generated by Pricing Agent on 2026-03-09