Pairwise benchmark snapshot · Aug 16, 2026

DeepSeek V3 vs GPT-5.6 Sol benchmark

Name: DeepSeek V3 vs GPT-5.6 Sol AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares DeepSeek V3 (DeepSeek) and GPT-5.6 Sol (OpenAI) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, GPT-5.6 Sol is ahead by 298 points (1,608 vs 1,310; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, GPT-5.6 Sol resolves 77.6% versus 48.6% (seed-bootstrap (Aug 16, 2026)). GPT-5.6 Sol streams faster (84 tok/s) while DeepSeek V3 is the cheaper output token ($1.03/1M). GPT-5.6 Sol has the larger context window (1.1M 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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DeepSeek

DeepSeek V3

Prior DeepSeek flagship. Baseline for v3 vs v4.

Elo 1,310$1.0287/1M out

OpenAI

GPT-5.6 Sol

OpenAI 5.6 flagship tier. Official API $5/$30 per 1M tokens (OpenAI pricing, Jul 30 2026 update left Sol unchanged).

Elo 1,608$30/1M out

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Instant pairwise benchmark recalculation across 400+ LLMs

Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

DeepSeek V3 (2)vsGPT-5.6 Sol (8)

DeepSeek V3: 2W (20%)Overall: GPT-5.6 SolGPT-5.6 Sol: 8W (80%)

← DeepSeek V3GPT-5.6 Sol →

GPT-5.6 Sol (5/5)

Intelligence & Reasoning

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

Preference Elo

1,310vs1,608

Coding Elo

—vs1,602

SWE-bench

48.6%vs77.6%

LiveBench

55.4%vs73.9%

GPQA Diamond

59.1%vs86.8%

DeepSeek V3: 0WGPT-5.6 Sol: 5W

GPT-5.6 Sol (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

66 tok/svs84 tok/s

Time to first token

380 msvs270 ms

DeepSeek V3: 0WGPT-5.6 Sol: 2W

DeepSeek V3 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$1.03/1Mvs$30/1M

Input price

$0.26/1Mvs$5/1M

Context window

164kvs1.1M

DeepSeek V3: 2WGPT-5.6 Sol: 1W

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 AdvantageGPT-5.6 Sol 5/6

Preference Elo

GPT-5.6 Sol

298 pts advantage

Throughput Speed

GPT-5.6 Sol

18 tok/s faster

Price Efficiency

DeepSeek V3

$28.97/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,310

EloHigh is better

1,608+23%

Code Elo

High is better

—

Code EloHigh is better

1,602

LiveBench

High is better

55.4%

LiveBenchHigh is better

73.9%+33%

SWE-bench

High is better

48.6%

SWE-benchHigh is better

77.6%+60%

GPQA

High is better

59.1%

GPQAHigh is better

86.8%+47%

TTFT

Low is better

380 ms

TTFTLow is better

270 ms+41%

Speed

High is better

66 tok/s

SpeedHigh is better

84 tok/s+27%

In $

Low is better

+1843%$0.26/1M

In $Low is better

$5/1M

Out $

Low is better

+2816%$1.03/1M

Out $Low is better

$30/1M

Context

High is better

164k

ContextHigh is better

1.1M+541%

Interactive Simulator

Workload Cost & Savings Calculator

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

Save up to 96% with DeepSeek V3

Monthly Volume50M tokens/mo

Quick Presets:

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

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

DeepSeek V3$24.44 / mo

In: $9.01Out: $15.43

GPT-5.6 Sol$625.00 / mo

In: $175.00Out: $450.00

Estimated Cost Delta

DeepSeek V3 is estimated to save $600.56/month ($7,207/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
GPT-5.6 Sol:Pick GPT-5.6 Sol when repo-level coding accuracy is the constraint.
2
DeepSeek V3:Pick DeepSeek V3 when you are optimizing output cost.
3
GPT-5.6 Sol:Pick GPT-5.6 Sol when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsGPT-5.6 Sol

Higher SWE-bench (77.6%).

High-volume chatDeepSeek V3

Lower output list price ($1.03/1M).

Voice / low-latency UIGPT-5.6 Sol

Lower TTFT (270 ms).

Long-document RAGGPT-5.6 Sol

Larger window (1.1M).

Screenshots / visionGPT-5.6 Sol

GPT-5.6 Sol is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GPT-5.6 Sol	Higher SWE-bench (77.6%).
High-volume chat	DeepSeek V3	Lower output list price ($1.03/1M).
Voice / low-latency UI	GPT-5.6 Sol	Lower TTFT (270 ms).
Long-document RAG	GPT-5.6 Sol	Larger window (1.1M).
Screenshots / vision	GPT-5.6 Sol	GPT-5.6 Sol is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 12, 2026

Grok vs ChatGPT: price and Elo, not a personality contest

Brand hub remaps to top xAI vs top OpenAI. After Aug 12 that is Grok 4.6 vs Sol.

compareJul 24, 2026

Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

Not a frozen 2025 article. Today that is usually Opus 5 vs GPT-5.6 Sol. Dated cells, not a brand fight.

compareJul 16, 2026

Gemini vs GPT: long context versus the OpenAI flagship invoice

Hub remaps to top Google vs top OpenAI Elo. Usually 3.6 Pro vs Sol. Window vs price is the plot.

launchJul 9, 2026

GPT-5.6 Sol: OpenAI’s $5/$30 flagship tier on this leaderboard

Jul 9 2026 family; Jul 30 price update left Sol unchanged. This is the GPT side of Claude vs GPT.

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LIVE

DeepSeek

DeepSeek V3

Elo 1,310

LiveBench55.4%

SWE-bench48.6%

Speed66 tok/s

Output cost$1.03/1M

OpenAI

GPT-5.6 Sol

Elo 1,608

LiveBench73.9%

SWE-bench77.6%

Speed84 tok/s

Output cost$30/1M

Frequently Asked Questions

Which is better overall, DeepSeek V3 or GPT-5.6 Sol?: GPT-5.6 Sol has the higher preference Elo in our latest snapshot (1,608). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, DeepSeek V3 or GPT-5.6 Sol?: GPT-5.6 Sol leads SWE-bench at 77.6% vs 48.6%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: DeepSeek V3 output tokens are $1.03/1M versus $30/1M. Input prices and retry rates still move the real bill.
Which is faster, DeepSeek V3 or GPT-5.6 Sol?: GPT-5.6 Sol has the lower time-to-first-token (270 ms vs 380 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: GPT-5.6 Sol accepts 1.1M tokens versus 164k.
Can I self-host either model?: DeepSeek V3 is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
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. DeepSeek V3 and GPT-5.6 Sol Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All DeepSeek V3 matchups →|All GPT-5.6 Sol matchups →

DeepSeek V3 vs DeepSeek Coder V2 (previous deepseek)DeepSeek V3 vs DeepSeek R1 (next deepseek)GPT-5.6 Sol vs GPT-5 (previous gpt-flagship)DeepSeek V4 Pro vs GPT-5.6 Sol GPT-4.5 Orion vs GPT-5.6 Sol GPT-5.6 Terra vs GPT-5.6 Sol

DeepSeek V3 vs GPT-5.6 Sol benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

DeepSeek V3 (2)vsGPT-5.6 Sol (8)

DeepSeek V3: 2W (20%)Overall: GPT-5.6 SolGPT-5.6 Sol: 8W (80%)

← DeepSeek V3GPT-5.6 Sol →

GPT-5.6 Sol (5/5)

Intelligence & Reasoning

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

Preference Elo

1,310vs1,608

Coding Elo

—vs1,602

SWE-bench

48.6%vs77.6%

LiveBench

55.4%vs73.9%

GPQA Diamond

59.1%vs86.8%

DeepSeek V3: 0WGPT-5.6 Sol: 5W

GPT-5.6 Sol (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

66 tok/svs84 tok/s

Time to first token

380 msvs270 ms

DeepSeek V3: 0WGPT-5.6 Sol: 2W

DeepSeek V3 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$1.03/1Mvs$30/1M

Input price

$0.26/1Mvs$5/1M

Context window

164kvs1.1M

DeepSeek V3: 2WGPT-5.6 Sol: 1W

Recommended Workload Routing

Repo / coding agentsGPT-5.6 Sol

Higher SWE-bench (77.6%).

High-volume chatDeepSeek V3

Lower output list price ($1.03/1M).

Voice / low-latency UIGPT-5.6 Sol

Lower TTFT (270 ms).

Long-document RAGGPT-5.6 Sol

Larger window (1.1M).

Screenshots / visionGPT-5.6 Sol

GPT-5.6 Sol is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GPT-5.6 Sol	Higher SWE-bench (77.6%).
High-volume chat	DeepSeek V3	Lower output list price ($1.03/1M).
Voice / low-latency UI	GPT-5.6 Sol	Lower TTFT (270 ms).
Long-document RAG	GPT-5.6 Sol	Larger window (1.1M).
Screenshots / vision	GPT-5.6 Sol	GPT-5.6 Sol is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, DeepSeek V3 or GPT-5.6 Sol?

GPT-5.6 Sol has the higher preference Elo in our latest snapshot (1,608). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, DeepSeek V3 or GPT-5.6 Sol?

GPT-5.6 Sol leads SWE-bench at 77.6% vs 48.6%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

DeepSeek V3 output tokens are $1.03/1M versus $30/1M. Input prices and retry rates still move the real bill.

Which is faster, DeepSeek V3 or GPT-5.6 Sol?

GPT-5.6 Sol has the lower time-to-first-token (270 ms vs 380 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

GPT-5.6 Sol accepts 1.1M tokens versus 164k.

Can I self-host either model?

DeepSeek V3 is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.

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. DeepSeek V3 and GPT-5.6 Sol 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

GPT-5.6 Sol

GPT-5.6 Sol

DeepSeek V3

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok vs ChatGPT: price and Elo, not a personality contest

Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

Gemini vs GPT: long context versus the OpenAI flagship invoice

GPT-5.6 Sol: OpenAI’s $5/$30 flagship tier on this leaderboard

Cast Your Matchup Vote

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DeepSeek V3

GPT-5.6 Sol

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

GPT-5.6 Sol

GPT-5.6 Sol

DeepSeek V3

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok vs ChatGPT: price and Elo, not a personality contest

Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

Gemini vs GPT: long context versus the OpenAI flagship invoice

GPT-5.6 Sol: OpenAI’s $5/$30 flagship tier on this leaderboard

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

DeepSeek V3

GPT-5.6 Sol

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons