8/17/2026, 7:44:55 AM · 15 tests · run 615689ef-0103-4182-85c9-774b9d080dae
Plain streaming generation with a soft length constraint (~100 words).
{ "wordCount": 19, "outputTokens": 26 }
Asserts usage tokens populate and cost computes from the ChatReq contract.
{ "inputTokens": 25, "outputTokens": 74, "reasoningTokens": 0, "costUsd": 0.000031725, "paid": true }
Asserts a streaming call captures events that reconstruct into the final text.
{ "mode": "streaming", "streamEventCount": 62, "textBlocks": 1, "textLen": 63 }
Same prompt via stream() and complete() both return valid, matching results.
{ "streamText": "Paris", "completeText": "Paris" }
Asserts the model's reasoning knob behaves as its reasoning-config declares.
{ "class": "toggleable", "mode": "deterministic", "offOutputTokens": 814, "midOutputTokens": 920, "midReasoningTokens": 0 }
Offers a calculator tool and checks the model calls it for an arithmetic question.
{ "toolCalled": true, "toolName": "multiply", "args": { "a": 23, "b": 17 }, "correct": true }
Forces a tool call, feeds the result back, and checks the continuation uses it.
{ "toolName": "multiply", "args": { "a": 23, "b": 17 }, "product": 391, "continuation": "\n\n23 multiplied by 17 equals 391.", "usesResult": true, "forced": true }
Enables server-side web search and checks invocation counts, the per-request cost surcharge, and provider-executed output blocks.
{ "skipped": "no server-side web search support" }
Reasoning model: continuity token captured on a tool call and replayed so the follow-up succeeds.
{ "signatureType": "none", "tokenCaptured": false, "reasoned": false, "answered": true, "continuation": "Current balance: **$1,234 USD** (from `acme-42`).\n\n**Growth calculation (5 % per year, compounded annually for 7 years):** \n\n\\[\n\\text{Futur" }
Repeat a large prefix; assert cache-read tokens are reported and cost drops.
{ "skipped": "cacheStyle=none" }
Requests a strict JSON object and checks it parses with the required keys.
{ "parsed": { "name": "Anthropic", "founded": 2021, "headquarters": "San Francisco, California, USA" }, "validJson": true, "missingKeys": [], "bareJson": true }
Summarizes an ~11k-token essay to ~500 words (long input, reasoning minimized).
{ "wordCount": 467, "inputTokens": 10385, "outputTokens": 627, "latencyMs": 21473 }
Tiny maxTokens on a long prompt yields finishReason:"length".
{ "finishReason": "length", "outputTokens": 100 }
Streaming-only models reject complete(); all others accept it.
{ "streamingOnly": false, "completeThrew": false }
A pre-aborted signal rejects the call (abort is threaded + honored).
{ "rejected": true, "errorName": "AbortError" }