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Heimdallm
Marketplace/Model library
QwenReleased Aug 28, 2026

Qwen3.8-27B

qwen/qwen3.8-27bChatVisionreasoningtools

Input
$0.041
Per million input tokens
Output
$0.25
Per million output tokens
Context
262K
Largest endpoint
Max output
66K
Largest endpoint
Modality
Text + Image → Text
textimage

Providers

Live endpoints for this model, cheapest first. TTFT is time to first token, measured on streamed requests; response is request to last byte, measured on every request; throughput covers the last day; uptime is measured over the last day and week.

ProviderContextMax outInputOutputCache readTTFTResponseThroughputCapacityUptime 1dUptime 7dToolsReasoningHealthData
Consensus Protocolfp890% offUS262K66K$0.041$0.25$0.01025764ms30m8.13s30m37 tok/s31/32 free99.3%94.3%VerifiedEffortHealthyZDR

Pricing

USD per million tokens.

ProviderInputOutputCache read
Consensus Protocolfp890% off$0.041$0.25$0.01025

Price history

Input price · USD per million tokens

Output price · USD per million tokens

Performance

Timing percentiles cover the labelled window: the last 30 minutes when it has enough samples, otherwise the last day. TTFT is the seconds to the first token, measured only on streamed requests; response is the seconds from request to last byte, measured on every request, streamed or not. Throughput is output tokens per second over the last day, counted only over streamed generations long enough to have a rate — a buffered answer has no generation phase, and a two-token one times the scheduler rather than the model. Tool calls is the share of the last day of tool requests this endpoint answered with a tool call, published once the day holds twenty of them; under that the cell is blank rather than a rate nothing measured.

ProviderTTFT p50p75p90p99Response p50p75p90p99Throughput p50p75p90p99Tool calls 1dRunaways 1d
Consensus Protocolfp8764ms30m1.14s1.63s3.40s8.13s30m15.5s40.8s272.3s37 tok/s40 tok/s41 tok/s41 tok/s—0.0%

Time to first token by hour · last 7 days

Hourly median per provider. The line spans hours with no streamed traffic; where samples are sparse, a dot marks each hour actually timed.

Throughput by hour · last 7 days

Hourly median output tokens per second per provider, over generations long enough to have a rate. The line spans hours with no answer long enough to measure; where samples are sparse, a dot marks each hour actually measured.

Rotating benchmark probes

Diagnostic scores from rotating dataset subsets. Percentages cover graded replies only and are not full benchmark results. Each score belongs to the provider’s serving configuration.

ProviderGSM8KMMLUaime25math500mmlu-pro
Consensus Protocolfp8
99.3%433 graded
93.2%557 graded
100.0%31 graded
99.8%415 graded
86.7%392 graded

Benchmark answers are graded mechanically against the vendored dataset reference answers — numeric comparison of the final number for GSM8K, MATH-500 and AIME 2025, the committed multiple-choice letter for MMLU, MMLU-Pro, MMMU and MMBench, cosine ranking of the returned vectors for the Banking77 and SciDocs retrieval triplets, and per-utterance word match for LibriSpeech and FLEURS — never by another model; a reply that ran into the probe’s token cap before it committed to an answer is recorded but not graded.

Uptime

Share of successful requests and probes over the last day and week.

  • Consensus Protocolfp8
    1d 99.3%7d 94.3%Healthy

Availability by hour · last 7 days

Share of successful requests and probes per hour and provider. The line spans hours with nothing to measure; where samples are sparse, a dot marks each hour actually measured.

Activity

Prompt tokens and completion tokens per UTC day over the last 30 days. Every billed request counts, the platform's own paid probe traffic included.

Prompt tokens794.8Mlast 30 days
Completion tokens51.2Mlast 30 days
Quickstart
curl https://api-staging.impossiblecarrot.cc/api/v1/chat/completions \  -H "Authorization: Bearer $HEIMDALL_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "qwen/qwen3.8-27b",    "messages": [{ "role": "user", "content": "Hello" }]  }'

Set HEIMDALL_API_KEY to a key from your account. See the quickstart for routing suffixes and provider preferences.

About

The provider has not published a description for this model.

Author
Qwen
Family
qwen/qwen3.8-27b
Weights
—
Parameters
frequency_penalty (-2–2), logit_bias (any value), logprobs (true/false), max_tokens (1–65536), min_p (0–1), presence_penalty (-2–2), reasoning_effort (none, low, medium, high), repetition_penalty (0–2), response_format (any value), seed (0–2147483647), stop (list), temperature (0–2), tool_choice (any value), tools (true/false), top_k (0–200), top_p (0–1)
Licence
—
Size
—
Tokenizer
—
Available until
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