chore(pricing): Update openai pricing

[siddharthsambharia-portkey]

🔄 Pricing Update: openai

📊 Summary (complete_diff mode)

Change Type	Count
➕ Models added	0
🔄 Models updated (merged)	17

🔄 Updated Models

• gpt-5.4-pro
• gpt-5.4-pro-2026-03-05
• gpt-4.1-nano
• gpt-4.1-nano-2025-04-14
• o4-mini-deep-research-2025-06-26
• gpt-audio-mini
• gpt-4o-mini-realtime-preview
• gpt-4o-mini-realtime-preview-2024-12-17
• gpt-4o-audio-preview
• gpt-4o-mini-audio-preview-2024-12-17
• gpt-4o-mini-transcribe
• gpt-4o-transcribe
• whisper-1
• gpt-image-1
• gpt-image-1-mini
• gpt-image-1.5
• chatgpt-image-latest

Model Coverage (128 API models + aliases = 129 entries)

Batch	Family	Models
1	GPT-5.4	gpt-5.4, gpt-5.4-pro, gpt-5.4-mini, gpt-5.4-nano (+ versioned)
2	GPT-5.3/5.2	gpt-5.3-chat-latest, gpt-5.3-codex, gpt-5.2 family (+ versioned/pro/codex)
3	GPT-5.1/5	gpt-5.1 family, gpt-5 family, search-api, nano, mini, pro, codex
4	GPT-4.x/4o/o1	gpt-4.1, gpt-4o, gpt-4-turbo, gpt-4, o1, o1-pro (+ versioned)
5	O-series/Codex/CU	o3, o3-mini, o3-pro, o4-mini, deep-research, codex-mini-latest, computer-use-preview
6	Audio/Realtime	gpt-audio, gpt-realtime, gpt-4o-realtime-preview, gpt-4o-audio-preview (all variants)
7	TTS/Transcribe/Embed/Image/Legacy	TTS, Whisper, Embeddings, DALL-E, Sora, GPT-3.5, babbage, davinci

Data Sources

• Model IDs: OpenAI Models API
• Pricing: LiteLLM model_prices_and_context_window.json (fallback — OpenAI pricing page was inaccessible via Cloudflare/firecrawl credit limits)

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Generated by Pricing Agent on 2026-04-13