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agent: Add GPT 5.6 Sol/Terra for ChatGPT subscription #60743

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Merged
bennetbo merged 1 commit into from
Jul 10, 2026
Merged

agent: Add GPT 5.6 Sol/Terra for ChatGPT subscription #60743

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57 changes: 40 additions & 17 deletions crates/language_models/src/provider/openai_subscribed.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -311,18 +311,28 @@ impl LanguageModelProvider for OpenAiSubscribedProvider {
// approximation; the entries below mirror that file's picker-visible models.
#[derive(Clone, Debug, PartialEq)]
enum ChatGptModel {
Gpt56Sol,
Gpt56Terra,
Gpt55,
Gpt54,
Gpt54Mini,
}

impl ChatGptModel {
fn all() -> Vec<Self> {
vec![Self::Gpt55, Self::Gpt54, Self::Gpt54Mini]
vec![
Self::Gpt56Sol,
Self::Gpt56Terra,
Self::Gpt55,
Self::Gpt54,
Self::Gpt54Mini,
]
}

fn id(&self) -> &str {
match self {
Self::Gpt56Sol => "gpt-5.6-sol",
Self::Gpt56Terra => "gpt-5.6-terra",
Self::Gpt55 => "gpt-5.5",
Self::Gpt54 => "gpt-5.4",
Self::Gpt54Mini => "gpt-5.4-mini",
Expand All @@ -331,18 +341,19 @@ impl ChatGptModel {

fn display_name(&self) -> &str {
match self {
Self::Gpt56Sol => "GPT-5.6 Sol",
Self::Gpt56Terra => "GPT-5.6 Terra",
Self::Gpt55 => "GPT-5.5",
Self::Gpt54 => "GPT-5.4",
Self::Gpt54Mini => "GPT-5.4 Mini",
}
}

fn max_token_count(&self) -> u64 {
// All Codex-supported models use a 272K context window in the Codex
// backend, even when the raw model exposes a larger context window via the
// public API (e.g. gpt-5.4 has max_context_window 1M, but Codex uses
// context_window 272K). Source: openai/codex models-manager/models.json.
272_000
match self {
Self::Gpt56Sol | Self::Gpt56Terra => 372_000,
Self::Gpt55 | Self::Gpt54 | Self::Gpt54Mini => 272_000,
}
}

fn max_output_tokens(&self) -> Option<u64> {
Expand All @@ -356,18 +367,30 @@ impl ChatGptModel {
}

fn default_reasoning_effort(&self) -> Option<ReasoningEffort> {
// Codex bundled models all default to Medium reasoning effort.
Some(ReasoningEffort::Medium)
match self {
Self::Gpt56Sol => Some(ReasoningEffort::Low),
Self::Gpt56Terra | Self::Gpt55 | Self::Gpt54 | Self::Gpt54Mini => {
Some(ReasoningEffort::Medium)
}
}
}

fn supported_reasoning_efforts(&self) -> &'static [ReasoningEffort] {
// The Codex backend's supported_reasoning_levels for every model in this list is low/medium/high/xhigh
&[
ReasoningEffort::Low,
ReasoningEffort::Medium,
ReasoningEffort::High,
ReasoningEffort::XHigh,
]
match self {
Self::Gpt56Sol | Self::Gpt56Terra => &[
ReasoningEffort::Low,
ReasoningEffort::Medium,
ReasoningEffort::High,
ReasoningEffort::XHigh,
ReasoningEffort::Max,
],
Self::Gpt55 | Self::Gpt54 | Self::Gpt54Mini => &[
ReasoningEffort::Low,
ReasoningEffort::Medium,
ReasoningEffort::High,
ReasoningEffort::XHigh,
],
}
}

fn supports_parallel_tool_calls(&self) -> bool {
Expand All @@ -380,7 +403,7 @@ impl ChatGptModel {

fn supports_priority(&self) -> bool {
match self {
Self::Gpt55 | Self::Gpt54 => true,
Self::Gpt56Sol | Self::Gpt56Terra | Self::Gpt55 | Self::Gpt54 => true,
Self::Gpt54Mini => false,
}
}
Expand Down Expand Up @@ -449,7 +472,7 @@ impl LanguageModel for OpenAiSubscribedLanguageModel {
ReasoningEffort::Medium => ("Medium", "medium"),
ReasoningEffort::High => ("High", "high"),
ReasoningEffort::XHigh => ("Extra High", "xhigh"),
ReasoningEffort::Max => return None, // Not supported by any OpenAI models
ReasoningEffort::Max => ("Max", "max"),
};

Some(LanguageModelEffortLevel {
Expand Down
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