LLM WORLD

GPT-4o

OpenAI · · 426 days after GPT-4

Verified

2 of 2 published values traced to a source2 primary sources, 2 archived1 not disclosed by the lab1 not researched yet

Why this status

Every value this record asserts — date (May 13, 2024) and context window (128,000) — was found in an archived primary source, checked 2026-08-10. Parameter count is not recorded, so nothing is claimed about it. Capabilities evidenced from the primary sources: vision: “GPT-4o (“o” for “omni”) is a step towards much more natural human-computer interaction—it accepts as input any combination of text, audio, and image and generates any com” | audio: “GPT-4o (“o” for “omni”) is a step towards much more natural human-computer interaction—it accepts as input any combination of text, audio, and image and generates any com”.

What these states mean · How records are judged · Has this record changed?

OpenAI's natively multimodal real-time model with voice conversation, free in ChatGPT.

visionaudiomultimodalflagship

Details

ReleasedMay 13, 2024
stated in openai.com, developers.openai.com

GPT-4o was released on May 13, 2024.

CompanyOpenAI
FamilyGPT
EraMultimodal & open weights
TypeLanguage model · LLM
ModalitiesText + Image + Audio → Text + Image + Audio
CapabilitiesVision, Audio
WeightsProprietary
LicenceNot applicable — proprietary
Context window128K tokens
stated in developers.openai.com

GPT-4o supports a context window of 128,000 tokens.

ParametersNot disclosed

Pricing

The price a lab's own page showed on the day that page was captured. That is what a snapshot can prove; it is not necessarily the launch price, and prices are often cut later. Citing the live pricing page instead would give a number with no date at all.

Input $2.5 per million tokens observed February 10, 2026 · archived snapshot (2026-02-10)
Output $10 per million tokens observed February 10, 2026 · archived snapshot (2026-02-10)

Current information, elsewhere

This record is a historical one: every figure above is traced to a dated primary source. For what is true today — live pricing, current rankings, availability — these are better maintained than anything here could be.

Sources

Record status: verified · confidence 90/100 · 2 of 2 primary

Every value this record asserts — date (May 13, 2024) and context window (128,000) — was found in an archived primary source, checked 2026-08-10. Parameter count is not recorded, so nothing is claimed about it. Capabilities evidenced from the primary sources: vision: “GPT-4o (“o” for “omni”) is a step towards much more natural human-computer interaction—it accepts as input any combination of text, audio, and image and generates any com” | audio: “GPT-4o (“o” for “omni”) is a step towards much more natural human-computer interaction—it accepts as input any combination of text, audio, and image and generates any com”.

Primary means published by the organisation that made the model. Verified records require at least one.

GPT family

  1. GPT-4 March 14, 2023
  2. GPT-4o May 13, 2024
  3. GPT-4.5 February 27, 2025
  4. GPT-5 August 7, 2025
  5. GPT-5.1 November 12, 2025
  6. GPT-5.2 December 11, 2025
  7. GPT-5.3-Codex February 5, 2026
  8. GPT-5.4 March 5, 2026
  9. GPT-5.5 April 23, 2026
  10. GPT-5.6 Sol July 9, 2026
  11. GPT-5.6 Luna July 9, 2026
  12. GPT-5.6 Terra July 9, 2026
  13. GPT-5.6-Cyber August 10, 2026
  14. GPT-6 Astra September 3, 2026
  15. GPT-Rosalind September 8, 2026
  16. GPT-6 Sol September 22, 2026
  17. GPT-6 Luna September 22, 2026
  18. GPT-6.1 Sol September 29, 2026

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