Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, GPT-5.6 Sol delivers higher overall intelligence and human-preferred responses (Elo 1,608 vs 1,574), while GPT-5.6 Sol leads in SWE-bench software engineering benchmarks (77.6%), while Claude Opus 4.6 is more budget-friendly at $25/1M per 1M output tokens, while GPT-5.6 Sol provides faster response streaming (84 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
9 direct benchmark disciplines evaluated across capability, speed, and cost
Follow-on Opus release. Slightly behind 4.5 on official SWE-bench bash-only in the last published sweep; stronger multi-step autonomous agent reasoning.
OpenAI 5.6 flagship tier. Official API $5/$30 per 1M tokens (OpenAI pricing, Jul 30 2026 update left Sol unchanged).
Currently comparing Claude Opus 4.6 vs GPT-5.6 Sol. Alternative family tiers available.
Simulate accuracy gains vs added response time & token cost
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.
Simulate accuracy gains vs added response time & token cost
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.
Δ 34 Arena Elo pts
84 tok/s
$25 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Claude Opus 4.6 | GPT-5.6 Sol | Advantage Delta |
|---|---|---|---|
| Preference Elo | +34 | ||
| Coding Elo | +32 | ||
| LiveBench | +1.9% | ||
| SWE-bench | +1.7% | ||
| GPQA Diamond | +2% | ||
| Time to first token | +90 ms | ||
| Output speed | 64 tok/s | 84 tok/s | +20 tok/s |
| Input price | — | ||
| Output price | +$5/1M | ||
| Context window | +50k |
Simulate monthly production API costs in USD (US Dollar).
Claude Opus 4.6 is estimated to save $75.00/month ($900/year).
Higher SWE-bench (77.6%).
Lower output list price ($25/1M).
Lower TTFT (270 ms).
Larger window (1.1M).
Both accept images. Defaulting to the higher-Elo side (GPT-5.6 Sol).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | GPT-5.6 Sol | Higher SWE-bench (77.6%). |
| High-volume chat | Claude Opus 4.6 | Lower output list price ($25/1M). |
| 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 | Both accept images. Defaulting to the higher-Elo side (GPT-5.6 Sol). |
Brand hub remaps to top xAI vs top OpenAI. After Aug 12 that is Grok 4.6 vs Sol.
Not a frozen 2025 article. Today that is usually Opus 5 vs GPT-5.6 Sol. Dated cells, not a brand fight.
Hub remaps to top Google vs top OpenAI Elo. Usually 3.6 Pro vs Sol. Window vs price is the plot.
Jul 9 2026 family; Jul 30 price update left Sol unchanged. This is the GPT side of Claude vs GPT.
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Verified Head-to-Head Telemetry
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GPT-5.6 Sol: OpenAI’s $5/$30 flagship tier on this leaderboard
