List models

The /v1/models endpoint is public — no API key required. Returns the live catalog of models currently available on FlexKey.

List models
curl https://api.flexkey.ai/v1/models
ModelProviderCapabilities
gpt-5.6-sol
GPT-5.6 Sol
OpenAI
reasoningattachmentstools
gpt-5.6-terra
GPT-5.6 Terra
OpenAI
reasoningattachmentstools
gpt-5.6-luna
GPT-5.6 Luna
OpenAI
reasoningattachmentstools
gpt-5.5
GPT-5.5
OpenAI
reasoningattachmentstools
gpt-5.5-pro
GPT-5.5 Pro
OpenAI
reasoningattachmentstools
gpt-5.4
GPT-5.4
OpenAI
reasoningattachmentstools
gpt-5.4-mini
GPT-5.4 Mini
OpenAI
reasoningattachmentstools
gpt-5.4-nano
GPT-5.4 Nano
OpenAI
reasoningattachmentstools
gpt-5.4-pro
GPT-5.4 Pro
OpenAI
reasoningattachmentstools
gpt-5.3-codex-spark
GPT-5.3 Codex Spark
OpenAI
reasoningattachmentstools
claude-fable-5
Claude Fable 5
Anthropic
reasoningattachmentstools
claude-opus-5
Claude Opus 5
Anthropic
reasoningattachmentstools
claude-opus-4-8
Claude Opus 4.8
Anthropic
reasoningattachmentstools
claude-sonnet-5
Claude Sonnet 5
Anthropic
reasoningattachmentstools
claude-haiku-4-5
Claude Haiku 4.5
Anthropic
reasoningattachmentstools
claude-opus-4-7
Claude Opus 4.7
Anthropic
reasoningattachmentstools
claude-opus-4-6
Claude Opus 4.6
Anthropic
reasoningattachmentstools
claude-opus-4-5
Claude Opus 4.5
Anthropic
reasoningattachmentstools
claude-opus-4-1
Claude Opus 4.1
Anthropic
reasoningattachmentstools
claude-sonnet-4-6
Claude Sonnet 4.6
Anthropic
reasoningattachmentstools
claude-sonnet-4-5
Claude Sonnet 4.5
Anthropic
reasoningattachmentstools

Showing 21 models. Refreshed every 15 minutes from the live API.

Model fields

id
object
created
owned_by
name
family
attachment
reasoning
tool_call
structured_output
temperature
knowledge
release_date
last_updated
modalities
open_weights
cost
limit