GPT-4o
GPT model for general reasoning, writing, coding, and tool-assisted tasks
- Price per 1M tokens
- $2.5 / $10 input / output · OpenAI
- Context window
- 128K tokens in · 16.4K out
- Since the last one
- 274 days after GPT-4
Since GPT-4
8 releases in the GPT-5.5 line.
GPT-4oMay 13, 2024336dGPT-4.1Apr 14, 2025115dGPT-5Aug 7, 202598dGPT-5.1Nov 13, 202528dGPT-5.2Dec 11, 202584dGPT-5.4Mar 5, 202649dGPT-5.5Apr 23, 2026
Released274 days later
Price in / out$2.5 / $10−88%
Context128K15.6×
A newer release is out: GPT-5.5.
BENCHMARKS
Not in the Epoch Capabilities Index. Epoch benchmarks what it can run, so this is a gap in coverage, not a poor result.
OpenAI's past year
24 release days in the past year, about one every 15 days. The next is expected around Nov 8, 2026. Forecasts ↗
NovDecJanFebMarAprMayJunJulAugSepOctNov
Specifications
RELEASE DATEAug 6, 2024
WEIGHTSClosed weights
CONTEXT WINDOW128K
MAX OUTPUT16.4K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext, image/jpeg, image/png, image/gif, image/webp
OUTPUTStext
Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.