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feat(core): enable low/med/high variants for Claude Sonnet/Opus 4.6 thinking #14

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feat(core): enable low/med/high variants for Claude Sonnet/Opus 4.6 thinking #14

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3482f7d
feat(core): enable low/med/high variants for Claude Sonnet/Opus 4.6 t…
sebastianlungu Sep 2, 2026
cc004d1
chore: ensure variant order low->medium->high for TUI
sebastianlungu Sep 2, 2026
8319a59
test(opencode): prove Claude low/medium/high budgets on Antigravity wire
sebastianlungu Sep 3, 2026
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10 changes: 6 additions & 4 deletions packages/core/src/model-registry.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -138,8 +138,9 @@ const ALL_MODEL_DEFINITIONS: OpencodeModelDefinitions = {
limit: { context: 250000, output: 64000 },
modalities: DEFAULT_MODALITIES,
variants: {
low: { disabled: true },
high: { disabled: true },
low: { thinkingConfig: { thinkingBudget: 8192 } },
medium: { thinkingConfig: { thinkingBudget: 16384 } },
high: { thinkingConfig: { thinkingBudget: 32768 } },
},
},
),
Expand All @@ -151,8 +152,9 @@ const ALL_MODEL_DEFINITIONS: OpencodeModelDefinitions = {
limit: { context: 250000, output: 64000 },
modalities: DEFAULT_MODALITIES,
variants: {
low: { disabled: true },
high: { disabled: true },
low: { thinkingConfig: { thinkingBudget: 8192 } },
medium: { thinkingConfig: { thinkingBudget: 16384 } },
high: { thinkingConfig: { thinkingBudget: 32768 } },
},
},
),
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12 changes: 7 additions & 5 deletions packages/opencode/src/plugin/config/models.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -58,15 +58,17 @@ describe('OPENCODE_MODEL_DEFINITIONS', () => {
})
})

it('disables unsupported automatic Claude budget variants', () => {
it('defines Claude thinking budget variants', () => {
expect(getModel('antigravity-claude-opus-4-6-thinking').variants).toEqual({
low: { disabled: true },
high: { disabled: true },
low: { thinkingConfig: { thinkingBudget: 8192 } },
medium: { thinkingConfig: { thinkingBudget: 16384 } },
high: { thinkingConfig: { thinkingBudget: 32768 } },
})
expect(getModel('antigravity-claude-sonnet-4-6-thinking').variants).toEqual(
{
low: { disabled: true },
high: { disabled: true },
low: { thinkingConfig: { thinkingBudget: 8192 } },
medium: { thinkingConfig: { thinkingBudget: 16384 } },
high: { thinkingConfig: { thinkingBudget: 32768 } },
},
)
})
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53 changes: 53 additions & 0 deletions packages/opencode/src/plugin/request.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2334,6 +2334,59 @@ describe('request.ts', () => {
expect(serialized).toContain('[Continue]')
})

it.each([
['antigravity-claude-sonnet-4-6-thinking', 'claude-sonnet-4-6', 8192],
['antigravity-claude-sonnet-4-6-thinking', 'claude-sonnet-4-6', 16384],
['antigravity-claude-sonnet-4-6-thinking', 'claude-sonnet-4-6', 32768],
[
'antigravity-claude-opus-4-6-thinking',
'claude-opus-4-6-thinking',
8192,
],
[
'antigravity-claude-opus-4-6-thinking',
'claude-opus-4-6-thinking',
16384,
],
[
'antigravity-claude-opus-4-6-thinking',
'claude-opus-4-6-thinking',
32768,
],
])('maps Claude variant budget %s -> %s with thinkingBudget %d on Antigravity wire', (requestedModel, wireModel, thinkingBudget) => {
const result = prepareAntigravityRequest(
`https://generativelanguage.googleapis.com/v1beta/models/${requestedModel}:generateContent`,
{
method: 'POST',
body: JSON.stringify({
contents: [],
generationConfig: {},
providerOptions: {
google: { thinkingConfig: { thinkingBudget } },
},
}),
},
mockAccessToken,
mockProjectId,
undefined,
'antigravity',
)
const wrapped = JSON.parse(result.init.body as string)
expect(result.effectiveModel).toBe(wireModel)
expect(wrapped.model).toBe(wireModel)
expect(wrapped.request.generationConfig.thinkingConfig).toEqual({
includeThoughts: true,
thinkingBudget,
})
expect(
wrapped.request.generationConfig.thinkingConfig,
).not.toHaveProperty('thinkingLevel')
expect(
wrapped.request.generationConfig.thinkingConfig,
).not.toHaveProperty('thinking_budget')
expect(wrapped.request.generationConfig.maxOutputTokens).toBe(64000)
})

it('maps Gemini 3.5 Flash medium variant to the live Antigravity medium-tier model', () => {
const result = prepareAntigravityRequest(
'https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3.5-flash:generateContent',
Expand Down