Pairwise benchmark snapshot · Aug 16, 2026noindex (thin pair)

Claude Opus 4.5 vs ByteDance Seed: Seed-2.0-Lite benchmark

Name: Claude Opus 4.5 vs ByteDance Seed: Seed-2.0-Lite AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Opus 4.5 (Anthropic) and ByteDance Seed: Seed-2.0-Lite (bytedance-seed) using the latest snapshots we have as of Aug 16, 2026. ByteDance Seed: Seed-2.0-Lite wins on output price at $2/1M. ByteDance Seed: Seed-2.0-Lite has the larger context window (262k tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Anthropic

Claude Opus 4.5

Anthropic frontier coding and computer-use model. SWE-bench leader on the official mini-SWE-agent harness in the Feb 2026 refresh.

Elo 1,568$25/1M out

bytedance-seed

ByteDance Seed: Seed-2.0-Lite

Auto-discovered from OpenRouter (bytedance-seed/seed-2.0-lite). Preview until a second source matches.

$2/1M out

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Instant pairwise benchmark recalculation across 400+ LLMs

Model A

Model B

Quick vs:vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet vs GPT-5

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Opus 4.5 (7)vsByteDance Seed: Seed-2.0-Lite (3)

Claude Opus 4.5: 7W (70%)Overall: Claude Opus 4.5ByteDance Seed: Seed-2.0-Lite: 3W (30%)

← Claude Opus 4.5ByteDance Seed: Seed-2.0-Lite →

Claude Opus 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,568vs—

Coding Elo

1,574vs—

SWE-bench

76.8%vs—

LiveBench

71.2%vs—

GPQA Diamond

84.1%vs—

Claude Opus 4.5: 5WByteDance Seed: Seed-2.0-Lite: 0W

Claude Opus 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

62 tok/svs—

Time to first token

380 msvs—

Claude Opus 4.5: 2WByteDance Seed: Seed-2.0-Lite: 0W

ByteDance Seed: Seed-2.0-Lite (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$25/1Mvs$2/1M

Input price

$5/1Mvs$0.25/1M

Context window

200kvs262k

Claude Opus 4.5: 0WByteDance Seed: Seed-2.0-Lite: 3W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageClaude Opus 4.5 4/6

Preference Elo

No shared data

Throughput Speed

No shared data

Price Efficiency

ByteDance Seed: Seed-2.0-Lite

$23.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,568

EloHigh is better

—

Code Elo

High is better

1,574

Code EloHigh is better

—

LiveBench

High is better

71.2%

LiveBenchHigh is better

—

SWE-bench

High is better

76.8%

SWE-benchHigh is better

—

GPQA

High is better

84.1%

GPQAHigh is better

—

TTFT

Low is better

380 ms

TTFTLow is better

—

Speed

High is better

62 tok/s

SpeedHigh is better

—

In $

Low is better

$5/1M

In $Low is better

$0.25/1M+1900%

Out $

Low is better

$25/1M

Out $Low is better

$2/1M+1150%

Context

High is better

200k

ContextHigh is better

262k+31%

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 93% with ByteDance Seed: Seed-2.0-Lite

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Claude Opus 4.5$550.00 / mo

In: $175.00Out: $375.00

ByteDance Seed: Seed-2.0-Lite$38.75 / mo

In: $8.75Out: $30.00

Estimated Cost Delta

ByteDance Seed: Seed-2.0-Lite is estimated to save $511.25/month ($6,135/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
ByteDance Seed: Seed-2.0-Lite:Pick ByteDance Seed: Seed-2.0-Lite when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatByteDance Seed: Seed-2.0-Lite

Lower output list price ($2/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGByteDance Seed: Seed-2.0-Lite

Larger window (262k).

Screenshots / visionClaude Opus 4.5

Claude Opus 4.5 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	ByteDance Seed: Seed-2.0-Lite	Lower output list price ($2/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	ByteDance Seed: Seed-2.0-Lite	Larger window (262k).
Screenshots / vision	Claude Opus 4.5	Claude Opus 4.5 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news

launchFeb 20, 2026

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

The Feb refresh made 4.5 a coding reference. Newer Opus SKUs exist; this row stays as the dated harness point.

Community Sentiment

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CompareLLM Matrix

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LIVE

Anthropic

Claude Opus 4.5

Elo 1,568

LiveBench71.2%

SWE-bench76.8%

Speed62 tok/s

Output cost$25/1M

bytedance-seed

ByteDance Seed: Seed-2.0-Lite

Elo n/a

LiveBench—

SWE-bench—

Speed—

Output cost$2/1M

Frequently Asked Questions

Which is better overall, Claude Opus 4.5 or ByteDance Seed: Seed-2.0-Lite?: We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Claude Opus 4.5 or ByteDance Seed: Seed-2.0-Lite?: SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?: ByteDance Seed: Seed-2.0-Lite output tokens are $2/1M versus $25/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Opus 4.5 or ByteDance Seed: Seed-2.0-Lite?: We do not have TTFT for both models.
Which has the larger context window?: ByteDance Seed: Seed-2.0-Lite accepts 262k tokens versus 200k.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Opus 4.5 and ByteDance Seed: Seed-2.0-Lite Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Opus 4.5 matchups →|All ByteDance Seed: Seed-2.0-Lite matchups →

Claude Opus 4.5 vs Claude Opus 4 (previous opus)Claude Opus 4.5 vs Claude Opus 4.6 (next opus)Claude Sonnet 5 vs Claude Opus 4.5 Claude Opus 4.8 vs Claude Opus 4.5 Claude Sonnet 4.5 vs Claude Opus 4.5 Claude Fable 5 vs Claude Opus 4.5

Claude Opus 4.5 vs ByteDance Seed: Seed-2.0-Lite benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Opus 4.5 (7)vsByteDance Seed: Seed-2.0-Lite (3)

Claude Opus 4.5: 7W (70%)Overall: Claude Opus 4.5ByteDance Seed: Seed-2.0-Lite: 3W (30%)

← Claude Opus 4.5ByteDance Seed: Seed-2.0-Lite →

Claude Opus 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,568vs—

Coding Elo

1,574vs—

SWE-bench

76.8%vs—

LiveBench

71.2%vs—

GPQA Diamond

84.1%vs—

Claude Opus 4.5: 5WByteDance Seed: Seed-2.0-Lite: 0W

Claude Opus 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

62 tok/svs—

Time to first token

380 msvs—

Claude Opus 4.5: 2WByteDance Seed: Seed-2.0-Lite: 0W

ByteDance Seed: Seed-2.0-Lite (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$25/1Mvs$2/1M

Input price

$5/1Mvs$0.25/1M

Context window

200kvs262k

Claude Opus 4.5: 0WByteDance Seed: Seed-2.0-Lite: 3W

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatByteDance Seed: Seed-2.0-Lite

Lower output list price ($2/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGByteDance Seed: Seed-2.0-Lite

Larger window (262k).

Screenshots / visionClaude Opus 4.5

Claude Opus 4.5 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	ByteDance Seed: Seed-2.0-Lite	Lower output list price ($2/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	ByteDance Seed: Seed-2.0-Lite	Larger window (262k).
Screenshots / vision	Claude Opus 4.5	Claude Opus 4.5 is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, Claude Opus 4.5 or ByteDance Seed: Seed-2.0-Lite?

We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.

Which is better at coding, Claude Opus 4.5 or ByteDance Seed: Seed-2.0-Lite?

SWE-bench is missing for at least one model, so we do not rank coding from a single number.

Which is cheaper to run in production?

ByteDance Seed: Seed-2.0-Lite output tokens are $2/1M versus $25/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Opus 4.5 or ByteDance Seed: Seed-2.0-Lite?

We do not have TTFT for both models.

Which has the larger context window?

ByteDance Seed: Seed-2.0-Lite accepts 262k tokens versus 200k.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Opus 4.5 and ByteDance Seed: Seed-2.0-Lite Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

No shared data

No shared data

ByteDance Seed: Seed-2.0-Lite

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Opus 4.5

ByteDance Seed: Seed-2.0-Lite

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

No shared data

No shared data

ByteDance Seed: Seed-2.0-Lite

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Opus 4.5

ByteDance Seed: Seed-2.0-Lite

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons