Pairwise benchmark snapshot · Aug 16, 2026

Claude Sonnet 4.5 vs Doubao Pro 1.5 benchmark

Name: Claude Sonnet 4.5 vs Doubao Pro 1.5 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Sonnet 4.5 (Anthropic) and Doubao Pro 1.5 (ByteDance) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Sonnet 4.5 is ahead by 54 points (1,524 vs 1,470; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Claude Sonnet 4.5 resolves 70.1% versus 62.1% (seed-bootstrap (Aug 1, 2026)). Doubao Pro 1.5 streams faster (105 tok/s) while Doubao Pro 1.5 is the cheaper output token ($0.28/1M). Claude Sonnet 4.5 has the larger context window (1M 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 Sonnet 4.5

Workhorse Anthropic model: most of Opus coding quality at a mid-tier price.

Elo 1,524$15/1M out

ByteDance

Doubao Pro 1.5

ByteDance flagship enterprise model with ultra-low token cost and 128k context.

Elo 1,470$0.28/1M out

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Model A

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Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 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 Sonnet 4.5 (6)vsDoubao Pro 1.5 (4)

Claude Sonnet 4.5: 6W (60%)Overall: Claude Sonnet 4.5Doubao Pro 1.5: 4W (40%)

← Claude Sonnet 4.5Doubao Pro 1.5 →

Claude Sonnet 4.5 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,524vs1,470

Coding Elo

1,531vs1,465

SWE-bench

70.1%vs62.1%

LiveBench

67.4%vs64%

GPQA Diamond

80.2%vs77.5%

Claude Sonnet 4.5: 5WDoubao Pro 1.5: 0W

Doubao Pro 1.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs105 tok/s

Time to first token

240 msvs190 ms

Claude Sonnet 4.5: 0WDoubao Pro 1.5: 2W

Doubao Pro 1.5 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$0.28/1M

Input price

$3/1Mvs$0.11/1M

Context window

1Mvs128k

Claude Sonnet 4.5: 1WDoubao Pro 1.5: 2W

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 Sonnet 4.5 4/6

Preference Elo

Claude Sonnet 4.5

54 pts advantage

Throughput Speed

Doubao Pro 1.5

17 tok/s faster

Price Efficiency

Doubao Pro 1.5

$14.72/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

+4%1,524

EloHigh is better

1,470

Code Elo

High is better

+5%1,531

Code EloHigh is better

1,465

LiveBench

High is better

+5%67.4%

LiveBenchHigh is better

64%

SWE-bench

High is better

+13%70.1%

SWE-benchHigh is better

62.1%

GPQA

High is better

+3%80.2%

GPQAHigh is better

77.5%

TTFT

Low is better

240 ms

TTFTLow is better

190 ms+26%

Speed

High is better

88 tok/s

SpeedHigh is better

105 tok/s+19%

In $

Low is better

$3/1M

In $Low is better

$0.11/1M+2627%

Out $

Low is better

$15/1M

Out $Low is better

$0.28/1M+5257%

Context

High is better

+681%1M

ContextHigh is better

128k

Interactive Simulator

Workload Cost & Savings Calculator

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

Save up to 98% with Doubao Pro 1.5

Monthly Volume50M tokens/mo

Quick Presets:

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

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

Claude Sonnet 4.5$330.00 / mo

In: $105.00Out: $225.00

Doubao Pro 1.5$8.05 / mo

In: $3.85Out: $4.20

Estimated Cost Delta

Doubao Pro 1.5 is estimated to save $321.95/month ($3,863/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Claude Sonnet 4.5:Pick Claude Sonnet 4.5 when repo-level coding accuracy is the constraint.
2
Doubao Pro 1.5:Pick Doubao Pro 1.5 when you are optimizing output cost.
3
Doubao Pro 1.5:Pick Doubao Pro 1.5 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Sonnet 4.5

Higher SWE-bench (70.1%).

High-volume chatDoubao Pro 1.5

Lower output list price ($0.28/1M).

Voice / low-latency UIDoubao Pro 1.5

Lower TTFT (190 ms).

Long-document RAGClaude Sonnet 4.5

Larger window (1M).

Screenshots / visionClaude Sonnet 4.5

Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 4.5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Sonnet 4.5	Higher SWE-bench (70.1%).
High-volume chat	Doubao Pro 1.5	Lower output list price ($0.28/1M).
Voice / low-latency UI	Doubao Pro 1.5	Lower TTFT (190 ms).
Long-document RAG	Claude Sonnet 4.5	Larger window (1M).
Screenshots / vision	Claude Sonnet 4.5	Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 4.5).

Related Editorial Dispatches & Benchmark Notes

View all news

launchFeb 18, 2026

Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Most of Opus 4.5 coding at a mid-tier price. Sonnet 5 replaced it as the buy; 4.5 remains a compare baseline.

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LIVE

Anthropic

Claude Sonnet 4.5

Elo 1,524

LiveBench67.4%

SWE-bench70.1%

Speed88 tok/s

Output cost$15/1M

ByteDance

Doubao Pro 1.5

Elo 1,470

LiveBench64%

SWE-bench62.1%

Speed105 tok/s

Output cost$0.28/1M

Frequently Asked Questions

Which is better overall, Claude Sonnet 4.5 or Doubao Pro 1.5?: Claude Sonnet 4.5 has the higher preference Elo in our latest snapshot (1,524). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude Sonnet 4.5 or Doubao Pro 1.5?: Claude Sonnet 4.5 leads SWE-bench at 70.1% vs 62.1%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Doubao Pro 1.5 output tokens are $0.28/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Sonnet 4.5 or Doubao Pro 1.5?: Doubao Pro 1.5 has the lower time-to-first-token (190 ms vs 240 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Claude Sonnet 4.5 accepts 1M tokens versus 128k.
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 Sonnet 4.5 and Doubao Pro 1.5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Sonnet 4.5 matchups →|All Doubao Pro 1.5 matchups →

Claude Sonnet 4.5 vs Claude Sonnet 4 (previous sonnet)Claude Sonnet 4.5 vs Claude Sonnet 5 (next sonnet)Doubao Pro 1.5 vs Doubao Lite 1.5 (previous seed)Doubao Pro 1.5 vs Seed 2.1 Turbo (next seed)Claude Opus 4.5 vs Claude Sonnet 4.5 Claude Opus 4.6 vs Claude Sonnet 4.5

Claude Sonnet 4.5 vs Doubao Pro 1.5 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Sonnet 4.5 (6)vsDoubao Pro 1.5 (4)

Claude Sonnet 4.5: 6W (60%)Overall: Claude Sonnet 4.5Doubao Pro 1.5: 4W (40%)

← Claude Sonnet 4.5Doubao Pro 1.5 →

Claude Sonnet 4.5 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,524vs1,470

Coding Elo

1,531vs1,465

SWE-bench

70.1%vs62.1%

LiveBench

67.4%vs64%

GPQA Diamond

80.2%vs77.5%

Claude Sonnet 4.5: 5WDoubao Pro 1.5: 0W

Doubao Pro 1.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs105 tok/s

Time to first token

240 msvs190 ms

Claude Sonnet 4.5: 0WDoubao Pro 1.5: 2W

Doubao Pro 1.5 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$0.28/1M

Input price

$3/1Mvs$0.11/1M

Context window

1Mvs128k

Claude Sonnet 4.5: 1WDoubao Pro 1.5: 2W

Recommended Workload Routing

Repo / coding agentsClaude Sonnet 4.5

Higher SWE-bench (70.1%).

High-volume chatDoubao Pro 1.5

Lower output list price ($0.28/1M).

Voice / low-latency UIDoubao Pro 1.5

Lower TTFT (190 ms).

Long-document RAGClaude Sonnet 4.5

Larger window (1M).

Screenshots / visionClaude Sonnet 4.5

Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 4.5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Sonnet 4.5	Higher SWE-bench (70.1%).
High-volume chat	Doubao Pro 1.5	Lower output list price ($0.28/1M).
Voice / low-latency UI	Doubao Pro 1.5	Lower TTFT (190 ms).
Long-document RAG	Claude Sonnet 4.5	Larger window (1M).
Screenshots / vision	Claude Sonnet 4.5	Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 4.5).

Frequently Asked Questions

Which is better overall, Claude Sonnet 4.5 or Doubao Pro 1.5?

Claude Sonnet 4.5 has the higher preference Elo in our latest snapshot (1,524). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Claude Sonnet 4.5 or Doubao Pro 1.5?

Claude Sonnet 4.5 leads SWE-bench at 70.1% vs 62.1%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Doubao Pro 1.5 output tokens are $0.28/1M versus $15/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Sonnet 4.5 or Doubao Pro 1.5?

Doubao Pro 1.5 has the lower time-to-first-token (190 ms vs 240 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Claude Sonnet 4.5 accepts 1M tokens versus 128k.

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 Sonnet 4.5 and Doubao Pro 1.5 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

Claude Sonnet 4.5

Doubao Pro 1.5

Doubao Pro 1.5

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Claude Sonnet 4.5

Doubao Pro 1.5

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

Claude Sonnet 4.5

Doubao Pro 1.5

Doubao Pro 1.5

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Sonnet 4.5

Doubao Pro 1.5

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons