chore(pricing): Update openai pricing

[siddharthsambharia-portkey]

🔄 Pricing Update: openai

📊 Summary (complete_diff mode)

Change Type	Count
➕ Models added	6
🔄 Models updated (merged)	35

➕ New Models

• gpt-5.5-2026-04-23
• gpt-5.5-pro-2026-04-23
• chat-latest
• gpt-realtime-2
• gpt-realtime-whisper
• gpt-realtime-translate

🔄 Updated Models

• gpt-5.4-pro
• gpt-5.4-pro-2026-03-05
• gpt-5.2-pro
• gpt-5.2-pro-2025-12-11
• gpt-5-pro
• gpt-5-pro-2025-10-06
• gpt-4.1-nano
• gpt-4.1-nano-2025-04-14
• gpt-4o-search-preview
• gpt-4o-search-preview-2025-03-11
• gpt-4o-mini-search-preview
• gpt-4o-mini-search-preview-2025-03-11
• o4-mini-deep-research-2025-06-26
• gpt-4o-mini-realtime-preview
• gpt-4o-mini-realtime-preview-2024-12-17
• gpt-realtime
• gpt-realtime-2025-08-28
• gpt-realtime-mini
• gpt-audio-mini
• gpt-4o-audio-preview
• gpt-4o-mini-audio-preview-2024-12-17
• gpt-4o-mini-tts
• gpt-4o-mini-tts-2025-03-20
• gpt-4o-mini-tts-2025-12-15
• gpt-4o-transcribe
• gpt-4o-transcribe-diarize
• gpt-4o-mini-transcribe
• gpt-4o-mini-transcribe-2025-03-20
• gpt-4o-mini-transcribe-2025-12-15
• gpt-image-1
• ... and 5 more

Model-to-Pricing Mapping

Pricing sourced from LiteLLM model_prices_and_context_window.json (https://raw.githubusercontent.com/BerriAI/litellm/main/model_prices_and_context_window.json) since the official OpenAI pricing page was blocked by Cloudflare during this run.

Batches Processed

Batch	Models	Count
1	GPT-5.5, 5.4, 5.3, 5.2, 5.1 families	25
2	GPT-5 base, search-api, chat-latest, GPT-4.1, GPT-4o start	25
3	GPT-4o continued, search-preview, computer-use, GPT-4, GPT-3.5, O1/O3 start	25
4	O3-pro, O4-mini, codex-mini, gpt-4o-realtime, gpt-realtime family	23
5	gpt-audio, gpt-4o-audio, TTS (tts-1/hd/mini), whisper, transcribe	24
6	gpt-image-1/1.5/2, chatgpt-image-latest, dall-e, sora-2, embeddings, moderation, legacy	17
Total		139

Key Pricing Notes

• gpt-realtime-whisper and gpt-realtime-translate: New models, set to $0 (no pricing found)
• gpt-realtime-1.5, gpt-realtime-2, gpt-audio-1.5: Aliases priced same as base realtime/audio models
• Image models (gpt-image-1, gpt-image-1-mini, gpt-image-1.5): Per-image pricing by quality tier (low/medium/high) and resolution
• Sora models: Priced per video second via additional field
• TTS models (tts-1, tts-1-hd): Priced per million characters; gpt-4o-mini-tts priced per token + audio output
• whisper-1: Priced per minute ($0.006/min)

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Generated by Pricing Agent on 2026-05-16