ModelInfo — skyl

ModelInfo is what Client.Models returns. Only three of its fields are populated by every adapter; the rest depend on what each provider's endpoint discloses.

Reference#

type ModelInfo struct { ID string Provider string DisplayName string ContextWindow int MaxOutputTokens int Raw json.RawMessage }

Parameters

ID — the identifier to put in Request.Model.
Provider — the adapter that offers it.
DisplayName — a human-readable name, when supplied.
ContextWindow — maximum input size in tokens.
MaxOutputTokens — maximum response size in tokens.
Raw — the provider's untouched entry for this model.

Caveats

Only ID, Provider and Raw are populated by every adapter. Zero means "not reported", not "zero".
OpenAI supplies almost nothing — its models endpoint has no display name, context window or output cap. The gap is upstream.
On openaicompat, everything beyond ID is host-dependent. OpenRouter supplies display name and context window; most others do not.
The list is scoped to your account: models you lack access to do not appear.

What each adapter reports#

Field	anthropic	openai	openaicompat	gemini
ID, Provider, Raw	yes	yes	yes	yes
DisplayName	yes	empty	host-dependent	yes
ContextWindow	yes	empty	host-dependent	yes
MaxOutputTokens	yes	never set	never set	yes

Usage#

Listing what is available

goCompiles

models, err := client.Models(ctx)
if err != nil {
	return err
}
for _, m := range models {
	fmt.Printf("%s (%s) context=%d\n", m.ID, m.DisplayName, m.ContextWindow)
}

models, err := client.Models(ctx)
if err != nil {
	return err
}
for _, m := range models {
	fmt.Printf("%s (%s) context=%d\n", m.ID, m.DisplayName, m.ContextWindow)
}

Reading metadata skyl does not model

for _, m := range models {
	var raw struct {
		Pricing struct {
			Prompt string `json:"prompt"`
		} `json:"pricing"`
	}
	// OpenRouter publishes pricing; skyl does not model it. Raw has it.
	if err := json.Unmarshal(m.Raw, &raw); err == nil && raw.Pricing.Prompt != "" {
		fmt.Printf("%s costs %s per prompt token\n", m.ID, raw.Pricing.Prompt)
	}
}

for _, m := range models {
	var raw struct {
		Pricing struct {
			Prompt string `json:"prompt"`
		} `json:"pricing"`
	}
	// OpenRouter publishes pricing; skyl does not model it. Raw has it.
	if err := json.Unmarshal(m.Raw, &raw); err == nil && raw.Pricing.Prompt != "" {
		fmt.Printf("%s costs %s per prompt token\n", m.ID, raw.Pricing.Prompt)
	}
}

Troubleshooting#

ContextWindow is zero on OpenAI

Not reported by their endpoint. Raw holds everything they do send. skyl's plan for metadata OpenAI does not publish is a generated registry refreshed from live endpoints by CI, rather than a hand-typed table that rots.

A model is missing from the list on Gemini

Beyond 1000 models the adapter ignores nextPageToken and truncates silently. In practice Gemini offers far fewer, but query the endpoint directly if you need completeness.