ByteDance · current

Seed 1.8

Seed 1.8 is attributed to ByteDance in the catalog. It accepts text and image input and produces text output. Reported capabilities include reasoning, tool calling, and structured output.

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Report an error Model and price history

Modalities

Hosted provider token rates

$0.11 / $0.28

USD per 1M input / output tokens · ZenMux

Context

256K

Released

2025-12-28

Knowledge cutoff

Unknown

No recent lab-operated provider rate is available. Showing the third-party host with the lowest input rate + ¼ output rate. This is one offering, not an average; other providers, modalities, tiers, and fees may differ.

Where to use it

7 observed offerings · token prices in USD per million where available

Estimate your workload cost

Vercel AI Gateway

bytedance/seed-1.8

current

Input

$0.25

Output

Cache

$0.05

Context

256K

Max output

33K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

Ofox

volcengine/doubao-seed-1-8

deprecated

Input

$0.12

Output

$0.29

Cache

$0.023

Context

256K

Max output

64K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Historical price

Requesty

seed-1.8

current

Input

$0.25

Output

Cache

$0.05

Context

256K

Max output

64K

Reasoning: Yes
Tool calling: Yes
Structured output: No
Temperature: Yes

Recent price

Volcengine Ark

doubao-seed-1-8-251228

deprecated

Input

$0.1188

Output

$1.1875

Cache

$0.0238

Context

256K

Max output

64K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Not a current offering

ZenMux

bytedance/doubao-seed-1.8

current

Input

$0.11

Output

$0.28

Cache

$0.023

Context

256K

Max output

32K

Reasoning: Yes
Tool calling: Yes
Structured output: Unknown
Temperature: Yes

Recent price

ZenMux

volcengine/doubao-seed-1.8

deprecated

Input

$0.11

Output

$0.28

Cache

$0.02

Context

256K

Max output

64K

Reasoning: Yes
Tool calling: Yes
Structured output: Unknown
Temperature: Yes

Not a current offering

302.AI

doubao-seed-1-8-251215

current

Input

$0.1143

Output

$0.286

Cache

—

Context

224K

Max output

64K

Reasoning: No
Tool calling: Yes
Structured output: Unknown
Temperature: Yes

Recent price

Limits and capabilities reflect each provider’s listed offering. Unknown means support was not reported.

Provider / API ID	Status	Context	Max output	Input	Output	Cache read	Reasoning	Tools	Structured	Temperature
Vercel AI Gateway bytedance/seed-1.8	currentRecent price	256K	33K	$0.25	$2	$0.05	Yes	Yes	Yes	Yes
Ofox volcengine/doubao-seed-1-8	deprecatedHistorical price	256K	64K	$0.12	$0.29	$0.023	Yes	Yes	Yes	Yes
Requesty seed-1.8	currentRecent price	256K	64K	$0.25	$2	$0.05	Yes	Yes	No	Yes
Volcengine Ark doubao-seed-1-8-251228	deprecatedNot a current offering	256K	64K	$0.1188	$1.1875	$0.0238	Yes	Yes	Yes	Yes
ZenMux bytedance/doubao-seed-1.8	currentRecent price	256K	32K	$0.11	$0.28	$0.023	Yes	Yes	Unknown	Yes
ZenMux volcengine/doubao-seed-1.8	deprecatedNot a current offering	256K	64K	$0.11	$0.28	$0.02	Yes	Yes	Unknown	Yes
302.AI doubao-seed-1-8-251215	currentRecent price	224K	64K	$0.1143	$0.286	—	No	Yes	Unknown	Yes

Capabilities and limits

Input: text, image
Output: text
Max output: 33K
Weights: Closed (source-reported)
Release: 2025-12-28
Knowledge cutoff: Unknown
Family: seed

Reasoning · Tool calling · Structured output · Vision

Provider-specific limits and support can differ.

Plan a model evaluation

Evaluate quality and latency on examples from your intended use before choosing a model.

Explore available evidence

Models to compare

Candidates match reported specifications; they are not tested replacements.

Seed 2.0 ProByteDance · 256K contextCompare →Seed 2.0 CodeByteDance · 256K contextCompare →Seed 2.1 ProCreator unverified · 256K contextCompare →

Model and price history

Latest recorded change: price change · 2026-10-22

Model changes (3)

price change · 2026-10-22

{
  "before": {
    "input": "0.11400000",
    "output": "0.28600000",
    "provider": "302.AI"
  },
  "after": {
    "input": 0.1143,
    "output": 0.286,
    "provider": "302.AI"
  }
}

source refresh · 2026-10-22

{
  "before": {
    "status": "current"
  },
  "after": {
    "status": "deprecated"
  }
}

source refresh · 2026-10-21

{
  "before": {
    "status": "current"
  },
  "after": {
    "status": "deprecated"
  }
}

Price history (168 observations)

Date	Provider	Input / output
2026-11-02	302.AI	$0.1143 / $0.286
2026-11-02	ZenMux	$0.11 / $0.28
2026-11-02	Vercel AI Gateway	$0.25 / $2
2026-11-02	Requesty	$0.25 / $2
2026-11-02	Volcengine Ark	$0.1188 / $1.1875
2026-11-02	ZenMux	$0.11 / $0.28
2026-11-01	302.AI	$0.1143 / $0.286
2026-11-01	ZenMux	$0.11 / $0.28
2026-11-01	Vercel AI Gateway	$0.25 / $2
2026-11-01	Requesty	$0.25 / $2
2026-11-01	Volcengine Ark	$0.1188 / $1.1875
2026-11-01	ZenMux	$0.11 / $0.28
2026-10-31	302.AI	$0.1143 / $0.286
2026-10-31	ZenMux	$0.11 / $0.28
2026-10-31	Vercel AI Gateway	$0.25 / $2
2026-10-31	Requesty	$0.25 / $2
2026-10-31	Volcengine Ark	$0.1188 / $1.1875
2026-10-31	ZenMux	$0.11 / $0.28
2026-10-30	302.AI	$0.1143 / $0.286
2026-10-30	ZenMux	$0.11 / $0.28
2026-10-30	Vercel AI Gateway	$0.25 / $2
2026-10-30	Requesty	$0.25 / $2
2026-10-30	Volcengine Ark	$0.1188 / $1.1875
2026-10-30	ZenMux	$0.11 / $0.28
2026-10-29	302.AI	$0.1143 / $0.286
2026-10-29	ZenMux	$0.11 / $0.28
2026-10-29	Vercel AI Gateway	$0.25 / $2
2026-10-29	Requesty	$0.25 / $2
2026-10-29	Volcengine Ark	$0.1188 / $1.1875
2026-10-29	ZenMux	$0.11 / $0.28
2026-10-28	302.AI	$0.1143 / $0.286
2026-10-28	ZenMux	$0.11 / $0.28
2026-10-28	Vercel AI Gateway	$0.25 / $2
2026-10-28	Requesty	$0.25 / $2
2026-10-28	Volcengine Ark	$0.1188 / $1.1875
2026-10-28	ZenMux	$0.11 / $0.28
2026-10-27	302.AI	$0.1143 / $0.286
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-27	Vercel AI Gateway	$0.25 / $2
2026-10-27	Requesty	$0.25 / $2
2026-10-27	Volcengine Ark	$0.1188 / $1.1875
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-27	302.AI	$0.1143 / $0.286
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-27	Vercel AI Gateway	$0.25 / $2
2026-10-27	Requesty	$0.25 / $2
2026-10-27	Volcengine Ark	$0.1188 / $1.1875
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-27	302.AI	$0.1143 / $0.286
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-27	Vercel AI Gateway	$0.25 / $2
2026-10-27	Requesty	$0.25 / $2
2026-10-27	Volcengine Ark	$0.1188 / $1.1875
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-27	302.AI	$0.1143 / $0.286
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-27	Vercel AI Gateway	$0.25 / $2
2026-10-27	Requesty	$0.25 / $2
2026-10-27	Volcengine Ark	$0.1188 / $1.1875
2026-10-27	ZenMux	$0.11 / $0.28
2026-10-26	302.AI	$0.1143 / $0.286
2026-10-26	ZenMux	$0.11 / $0.28
2026-10-26	Vercel AI Gateway	$0.25 / $2
2026-10-26	Requesty	$0.25 / $2
2026-10-26	Volcengine Ark	$0.1188 / $1.1875
2026-10-26	ZenMux	$0.11 / $0.28
2026-10-25	302.AI	$0.1143 / $0.286
2026-10-25	ZenMux	$0.11 / $0.28
2026-10-25	Vercel AI Gateway	$0.25 / $2
2026-10-25	Requesty	$0.25 / $2
2026-10-25	Volcengine Ark	$0.1188 / $1.1875
2026-10-25	ZenMux	$0.11 / $0.28
2026-10-24	302.AI	$0.1143 / $0.286
2026-10-24	ZenMux	$0.11 / $0.28
2026-10-24	Vercel AI Gateway	$0.25 / $2
2026-10-24	Requesty	$0.25 / $2
2026-10-24	Volcengine Ark	$0.1188 / $1.1875
2026-10-24	ZenMux	$0.11 / $0.28
2026-10-24	302.AI	$0.1143 / $0.286
2026-10-24	ZenMux	$0.11 / $0.28
2026-10-24	Vercel AI Gateway	$0.25 / $2
2026-10-24	Requesty	$0.25 / $2
2026-10-24	Volcengine Ark	$0.1188 / $1.1875
2026-10-24	ZenMux	$0.11 / $0.28
2026-10-24	302.AI	$0.1143 / $0.286
2026-10-24	ZenMux	$0.11 / $0.28
2026-10-24	Vercel AI Gateway	$0.25 / $2
2026-10-24	Requesty	$0.25 / $2
2026-10-24	Volcengine Ark	$0.1188 / $1.1875
2026-10-24	ZenMux	$0.11 / $0.28
2026-10-23	302.AI	$0.1143 / $0.286
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	Vercel AI Gateway	$0.25 / $2
2026-10-23	Requesty	$0.25 / $2
2026-10-23	Volcengine Ark	$0.1188 / $1.1875
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	302.AI	$0.1143 / $0.286
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	Vercel AI Gateway	$0.25 / $2
2026-10-23	Requesty	$0.25 / $2
2026-10-23	Volcengine Ark	$0.1188 / $1.1875
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	302.AI	$0.1143 / $0.286
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	Vercel AI Gateway	$0.25 / $2
2026-10-23	Requesty	$0.25 / $2
2026-10-23	Volcengine Ark	$0.1188 / $1.1875
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	302.AI	$0.1143 / $0.286
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	Vercel AI Gateway	$0.25 / $2
2026-10-23	Requesty	$0.25 / $2
2026-10-23	Volcengine Ark	$0.1188 / $1.1875
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	302.AI	$0.1143 / $0.286
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-23	Vercel AI Gateway	$0.25 / $2
2026-10-23	Requesty	$0.25 / $2
2026-10-23	Volcengine Ark	$0.1188 / $1.1875
2026-10-23	ZenMux	$0.11 / $0.28
2026-10-22	302.AI	$0.1143 / $0.286
2026-10-22	ZenMux	$0.11 / $0.28
2026-10-22	Vercel AI Gateway	$0.25 / $2
2026-10-22	Ofox	$0.12 / $0.29
2026-10-22	Requesty	$0.25 / $2
2026-10-22	Volcengine Ark	$0.1188 / $1.1875
2026-10-22	ZenMux	$0.11 / $0.28
2026-10-21	Vercel AI Gateway	$0.25 / $2
2026-10-21	Ofox	$0.12 / $0.29
2026-10-21	Requesty	$0.25 / $2
2026-10-21	Volcengine Ark	$0.1188 / $1.1875
2026-10-20	Vercel AI Gateway	$0.25 / $2
2026-10-20	Ofox	$0.12 / $0.29
2026-10-20	Volcengine Ark	$0.1188 / $1.1875
2026-10-19	Ofox	$0.12 / $0.29
2026-10-19	Volcengine Ark	$0.1188 / $1.1875
2026-10-18	Ofox	$0.12 / $0.29
2026-10-18	Volcengine Ark	$0.1188 / $1.1875
2026-10-17	Ofox	$0.12 / $0.29
2026-10-17	Volcengine Ark	$0.1188 / $1.1875
2026-10-12	Ofox	$0.12 / $0.29
2026-10-12	Volcengine Ark	$0.1188 / $1.1875
2026-10-12	Ofox	$0.12 / $0.29
2026-10-12	Volcengine Ark	$0.1188 / $1.1875
2026-10-11	Ofox	$0.12 / $0.29
2026-10-11	Volcengine Ark	$0.1188 / $1.1875
2026-10-10	Ofox	$0.12 / $0.29
2026-10-10	Volcengine Ark	$0.1188 / $1.1875
2026-10-09	Ofox	$0.12 / $0.29
2026-10-09	Volcengine Ark	$0.1188 / $1.1875
2026-10-09	Ofox	$0.12 / $0.29
2026-10-09	Volcengine Ark	$0.1188 / $1.1875
2026-10-08	Ofox	$0.12 / $0.29
2026-10-08	Volcengine Ark	$0.1188 / $1.1875
2026-10-07	Ofox	$0.12 / $0.29
2026-10-07	Volcengine Ark	$0.1188 / $1.1875
2026-09-22	Ofox	$0.12 / $0.29
2026-09-22	Volcengine Ark	$0.1188 / $1.1875
2026-09-21	Ofox	$0.12 / $0.29
2026-09-21	Volcengine Ark	$0.1188 / $1.1875
2026-09-20	Ofox	$0.12 / $0.29
2026-09-20	Volcengine Ark	$0.1188 / $1.1875
2026-09-19	Ofox	$0.12 / $0.29
2026-09-19	Volcengine Ark	$0.1188 / $1.1875
2026-09-18	Ofox	$0.12 / $0.29
2026-09-18	Volcengine Ark	$0.1188 / $1.1875
2026-09-17	Ofox	$0.12 / $0.29
2026-09-17	Volcengine Ark	$0.1188 / $1.1875