Find your possibilities.

ModelCapabilities in CelesteFeaturesCompare

GPT-4.1

OpenAI

gpt-4.1

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-4.1 (gpt-4.1)

GPT-4o

OpenAI

gpt-4o

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-4o (gpt-4o)

GPT-4o Mini

OpenAI

gpt-4o-mini

• text.generate
• images.analyze

StreamingTool calling

Compare GPT-4o Mini (gpt-4o-mini)

GPT-5

OpenAI

gpt-5

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5 (gpt-5)

GPT-5 Mini

OpenAI

gpt-5-mini

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5 Mini (gpt-5-mini)

GPT-5 Nano

OpenAI

gpt-5-nano

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5 Nano (gpt-5-nano)

GPT-5.1

OpenAI

gpt-5.1

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5.1 (gpt-5.1)

GPT-5.1 Codex

OpenAI

gpt-5.1-codex

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5.1 Codex (gpt-5.1-codex)

GPT-5.2

OpenAI

gpt-5.2

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5.2 (gpt-5.2)

GPT-5.2 Codex

OpenAI

gpt-5.2-codex

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5.2 Codex (gpt-5.2-codex)

GPT-5.2 Instant

OpenAI

gpt-5.2-chat-latest

• text.generate
• images.analyze

StreamingTool calling

Compare GPT-5.2 Instant (gpt-5.2-chat-latest)

GPT-5.2 Pro

OpenAI

gpt-5.2-pro

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5.2 Pro (gpt-5.2-pro)

GPT-5.4

OpenAI

gpt-5.4

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5.4 (gpt-5.4)

GPT-5.4 Pro

OpenAI

gpt-5.4-pro

• text.generate
• images.analyze

StreamingTool callingStructured output

Compare GPT-5.4 Pro (gpt-5.4-pro)

Capabilities come from the published Celeste SDK. Support varies by model. Test your prompts when switching.