AI Models · Paid vs Paid

GPT-5.6 Sol Paid vs Claude Opus 4.8 Paid

GPT-5.6 Sol vs Claude Opus 4.8 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.

GPT-5.6 Sol — full profile ›  ·  Claude Opus 4.8 — full profile ›

Prices & specs refreshed from live data · OpenSourceAI.tech

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

Choose Claude Opus 4.8 for the lower output price ($25/M vs $30/M). Choose GPT-5.6 Sol if you need the larger 1.1M context window.

GPT-5.6 Sol vs Claude Opus 4.8 specs

SpecGPT-5.6 SolClaude Opus 4.8
MakerOpenAIAnthropic
TypeProprietaryProprietary
Context window1.1M tokens1M tokens
Input price$5/M$5/M
Output price$30/M$25/M
Vision / multimodalYesYes
Tool / function callingYesYes
Self-hostableNo (API only)No (API only)
LicenseProprietaryProprietary

Feature comparison

CapabilityGPT-5.6 SolClaude Opus 4.8
Open weights (downloadable)✗✗
Self-hostable✗✗
Runs fully offline✗✗
Vision / multimodal✓✓
Tool / function calling✓✓
1M+ context window✓✓

Benchmarks: GPT-5.6 Sol vs Claude Opus 4.8

Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).

GPT-5.6 Sol
Claude Opus 4.8
Intelligence index
58.9
55.7
Coding index
77.4
74.3
GPQA
94.1%
92%
Humanity's Last Exam
47.2%
45.7%
Long Context Reasoning
73.7%
67.7%
SciCode
56.1%
53.5%
IFBench
72.7%
62.2%
τ²-Bench
85.1%
94.4%
τ-Bench Banking
33%
27.6%
Terminal-Bench
88%
84.6%
Terminal-Bench Hard
65.9%
58.3%
Speed
68.5 tok/s
62.5 tok/s
Latency
65.87s
28.57s
Intelligence per $
5.2
5.6

Benchmark data by Artificial Analysis.

How GPT-5.6 Sol and Claude Opus 4.8 score

🤝 Neck and neck on these criteria (3.1 vs 3.1 / 5).
CriterionGPT-5.6 SolClaude Opus 4.8
Cost-efficiency3.03.0
Context window5.05.0
Openness1.51.5
Self-hosting1.01.0
Multimodality5.05.0

Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.

What each model is

GPT-5.6 Sol Paid

OpenAI · Proprietary

GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...

Claude Opus 4.8 Paid

Anthropic · Proprietary

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...

Other models in these families

These variants are tracked but not compared here — one page per family keeps the comparison readable.

Other variants tracked
Claude Opus 4.7Claude Opus 4.6

Frequently asked questions

GPT-5.6 Sol vs Claude Opus 4.8 — which is cheaper?

Claude Opus 4.8 is cheaper on output ($25/M vs $30/M).

Which has the larger context window?

GPT-5.6 Sol offers the larger context window (1.1M tokens).

GPT-5.6 Sol vs Claude Opus 4.8 — which should I pick in 2026?

Choose Claude Opus 4.8 for the lower output price ($25/M vs $30/M). Choose GPT-5.6 Sol if you need the larger 1.1M context window.

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