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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  3. OpenAI: GPT-4 Turbo Preview vs GPT-5.6 Sol

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

OpenAI: GPT-4 Turbo Preview vs GPT-5.6 Sol benchmark

In this head-to-head showdown, OpenAI: GPT-4 Turbo Preview is more budget-friendly at $30/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Both OpenAI: GPT-4 Turbo Preview and GPT-5.6 Sol present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
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Verified Head-to-Head Advantage Breakdown

2 direct benchmark disciplines evaluated across capability, speed, and cost

OpenAI: GPT-4 Turbo Preview (0)GPT-5.6 Sol (2)
OpenAI: GPT-4 Turbo Preview
0 of 2 Wins
Competitive baseline across remaining benchmarks
GPT-5.6 Sol
2 of 2 Wins
✓Input price✓Context window
OpenAI
OpenAI: GPT-4 Turbo Preview

Auto-discovered from OpenRouter (openai/gpt-4-turbo-preview). Preview until a second source matches.

$30/1M out
OpenAI
Leads 2 of 2 metrics
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

GPT-5.6 Sol Thinking Depth & Cost Scaler

Model B

Simulate accuracy gains vs added response time & token cost

Mode: Medium (Standard)

Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.

Thinking Delay
270 ms
Standard speed
Reasoning Depth
~1,500
Internal tokens
Cost / 1k Calls
$56.50
4.9× standard bill
Accuracy Boost
+4.5% accuracy
STEM & SWE-bench
Top Rival Showdowns for OpenAI: GPT-4 Turbo Preview
All Matchups
Compare vs:vs Claude Opus 4.5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderOpenAI: GPT-4 Turbo Preview Wins

OpenAI: GPT-4 Turbo Preview

$30 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile
Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

OpenAI: GPT-4 Turbo Preview (0)vsGPT-5.6 Sol (9)
OpenAI: GPT-4 Turbo Preview: 0W (0%)Overall: GPT-5.6 SolGPT-5.6 Sol: 9W (100%)
← OpenAI: GPT-4 Turbo Preview1 tiesGPT-5.6 Sol →
🏆GPT-5.6 Sol(5/5)

Intelligence & Reasoning

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

Benchmark
OpenAI: GPT-4 Turbo PreviewvsGPT-5.6 Sol
Preference Elo
—vs1,608
Coding Elo
—vs1,602
SWE-bench
—vs77.6%
LiveBench
—vs73.9%
GPQA Diamond
—vs86.8%
OpenAI: GPT-4 Turbo Preview: 0WGPT-5.6 Sol: 5W
🏆GPT-5.6 Sol(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
OpenAI: GPT-4 Turbo PreviewvsGPT-5.6 Sol
Output speed
—vs84 tok/s
Time to first token
—vs270 ms
OpenAI: GPT-4 Turbo Preview: 0WGPT-5.6 Sol: 2W
🏆GPT-5.6 Sol(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
OpenAI: GPT-4 Turbo PreviewvsGPT-5.6 Sol
Output price
$30/1Mvs$30/1M
Input price
$10/1Mvs$5/1M+$5/1M
Context window
128kvs1.1M+922k
OpenAI: GPT-4 Turbo Preview: 0WGPT-5.6 Sol: 2W

Side-by-Side Benchmark Matrix

Preference Elo
OpenAI: GPT-4 Turbo Preview—
GPT-5.6 Sol1,608
lmarena · Aug 16, 2026
Coding Elo
OpenAI: GPT-4 Turbo Preview—
GPT-5.6 Sol1,602
lmarena · Aug 16, 2026
LiveBench
OpenAI: GPT-4 Turbo Preview—
GPT-5.6 Sol73.9%
livebench · Aug 16, 2026
SWE-bench
OpenAI: GPT-4 Turbo Preview—
GPT-5.6 Sol77.6%
swebench · Aug 16, 2026
GPQA Diamond
OpenAI: GPT-4 Turbo Preview—
GPT-5.6 Sol86.8%
seed-bootstrap · Aug 16, 2026
Time to first token
OpenAI: GPT-4 Turbo Preview—
GPT-5.6 Sol270 ms
seed-bootstrap · Aug 16, 2026
Output speed
OpenAI: GPT-4 Turbo Preview—
GPT-5.6 Sol84 tok/s
seed-bootstrap · Aug 16, 2026
Input price+$5/1M
OpenAI: GPT-4 Turbo Preview$10/1M
openrouter · Aug 17, 2026
GPT-5.6 Sol$5/1M
openrouter · Aug 17, 2026
Output price
OpenAI: GPT-4 Turbo Preview$30/1M
openrouter · Aug 17, 2026
GPT-5.6 Sol$30/1M
openrouter · Aug 17, 2026
Context window+922k
OpenAI: GPT-4 Turbo Preview128k
openrouter · Aug 17, 2026
GPT-5.6 Sol1.1M
openrouter · Aug 17, 2026
BenchmarkOpenAI: GPT-4 Turbo PreviewGPT-5.6 SolAdvantage Delta
Preference Elo—
1,608
lmarena · Aug 16, 2026
—
Coding Elo—
1,602
lmarena · Aug 16, 2026
—
LiveBench—
73.9%
livebench · Aug 16, 2026
—
SWE-bench—
77.6%
swebench · Aug 16, 2026
—
GPQA Diamond—
86.8%
seed-bootstrap · Aug 16, 2026
—
Time to first token—
270 ms
seed-bootstrap · Aug 16, 2026
—
Output speed—
84 tok/s
seed-bootstrap · Aug 16, 2026
—
Input price
$10/1M
openrouter · Aug 17, 2026
$5/1M
openrouter · Aug 17, 2026
+$5/1M
Output price
$30/1M
openrouter · Aug 17, 2026
$30/1M
openrouter · Aug 17, 2026
—
Context window
128k
openrouter · Aug 17, 2026
1.1M
openrouter · Aug 17, 2026
+922k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save up to 22% with GPT-5.6 Sol
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
OpenAI: GPT-4 Turbo Preview$800.00 / mo
In: $350Out: $450
GPT-5.6 Sol$625.00 / mo
In: $175Out: $450
Estimated Cost Delta

GPT-5.6 Sol is estimated to save $175.00/month ($2,100/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    OpenAI: GPT-4 Turbo Preview:Pick OpenAI: GPT-4 Turbo Preview when you are optimizing output cost.
  • 2
    GPT-5.6 Sol:Pick GPT-5.6 Sol for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatOpenAI: GPT-4 Turbo Preview

Lower output list price ($30/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

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 WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatOpenAI: GPT-4 Turbo PreviewLower output list price ($30/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGGPT-5.6 SolLarger window (1.1M).
Screenshots / visionGPT-5.6 SolGPT-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.

Community Sentiment

Cast Your Matchup Vote

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
OpenAI

OpenAI: GPT-4 Turbo Preview

Elo n/a
SWE-bench—
Speed (tok/s)128k
Input / 1M Tokens$10/1M
Output / 1M Tokens$30/1M
OpenAI

GPT-5.6 Sol

Elo 1,608
SWE-bench77.6%
Speed (tok/s)84 tok/s
Input / 1M Tokens$5/1M
Output / 1M Tokens$30/1M

Frequently Asked Questions

Which is better overall, OpenAI: GPT-4 Turbo Preview or GPT-5.6 Sol?
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, OpenAI: GPT-4 Turbo Preview or GPT-5.6 Sol?
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?
OpenAI: GPT-4 Turbo Preview output tokens are $30/1M versus $30/1M. Input prices and retry rates still move the real bill.
Which is faster, OpenAI: GPT-4 Turbo Preview or GPT-5.6 Sol?
We do not have TTFT for both models.
Which has the larger context window?
GPT-5.6 Sol accepts 1.1M 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. OpenAI: GPT-4 Turbo Preview and GPT-5.6 Sol Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • compare · Aug 12, 2026

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

  • compare · Jul 24, 2026

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

  • compare · Jul 16, 2026

    Gemini vs GPT: long context versus the OpenAI flagship invoice

  • launch · Jul 9, 2026

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

Similar Head-to-Head Comparisons

All OpenAI: GPT-4 Turbo Preview matchups →|All GPT-5.6 Sol matchups →
GPT-5.6 Sol vs GPT-5 (previous gpt-flagship)GPT-4.5 Orion vs GPT-5.6 SolGPT-5.6 Terra vs GPT-5.6 SolGPT-5 mini vs GPT-5.6 SolGPT-4o vs GPT-5.6 SolGPT-4o mini vs GPT-5.6 Sol