OpenAI: GPT-5.4 Image 2
openai/gpt-5.4-image-2 · OpenAINot yet established- Declared family
- GPT
- Evidence confidence
- Unknown
- Declared tokenizer tag
- GPT
- Entered catalogue
- 21 April 2026
- Last tested
- Not yet measured
- Measurement
- Awaiting measurement
Evidence stack
Signals of different kinds, weighed together| Signal | Result | Reference |
|---|---|---|
| Tokenizer signature | Not measured | – |
| API surface | No other entry shares this exact contract | api_bcef578e |
| Context and output | 272,000 context · 128,000 max output | declared |
| Reasoning contract | Optional · efforts xhigh, high, medium, low, none · default medium | declared |
| Serving providers observed | None recorded yet | – |
Declared record
What the catalogue claims about this model[GPT-5.4](https://openrouter.ai/openai/gpt-5.4) Image 2 combines OpenAI's GPT-5.4 model with state-of-the-art image generation capabilities from GPT Image 2. It enables rich multimodal workflows, allowing users to seamlessly move between reasoning, coding, and...
- Modalities
- text+image+file->text+image
- Declared tokenizer
- GPT
- Prompt price
- $8.00 / M tokens
- Completion price
- $15.0 / M tokens
Supported parameters
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstopstructured_outputstop_logprobs
defaults: {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null}
History
Every observation, kept as taken- 21 April 2026Enters the OpenRouter catalogue declared as GPT.
Cite this page as the evidence record for OpenAI: GPT-5.4 Image 2: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.
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