Claude Opus 5.5 vs Seed-2.0-Lite

Price, context window & benchmark comparison

A

Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
VS
B

Seed-2.0-Lite

ByteDance Seed
$0.25 / $2.00
Input / Output · per 1M tokens
Compare different models
A
B
Verdict: Seed-2.0-Lite is 11.6× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix. Claude Opus 5.5 has the larger context window (1M vs 262K).
Claude Opus 5.5Seed-2.0-Lite
Input price / 1M$4.00$0.25
Output price / 1M$20.00$2.00
Blended price (3:1)$8.00$0.69
Cached input / 1M$0.20
Context window1M262K
Max output128K131K
Intelligence index57.6
Coding index
Providers11
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-222026-03-10
Retirement

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FAQ

Which is cheaper, Claude Opus 5.5 or Seed-2.0-Lite?

Seed-2.0-Lite is 11.6× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix.

Claude Opus 5.5 vs Seed-2.0-Lite: which has a bigger context window?

Claude Opus 5.5: 1,000,000 tokens. Seed-2.0-Lite: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 5.5 ≈ $18,000, Seed-2.0-Lite ≈ $1,500.

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