VerdictPal · editorial desk · 2026VerdictPal

Compare · Two models, head-to-head

Pick two models. See the diff.

Composite scores, benchmark ranks, capability grids, and pricing per million tokens. All sourced from the same data that powers the model atlas.

Cards Models

GPT-5.6 Sol vs Claude Opus 4.8

Model A

Model B

MODEL A

GPT-5.6 Sol

OpenAI · GPT-5.6

Composite 66Intel 7311 rows2 sources

OpenAI's generally available GPT-5.6 flagship for coding, science, cybersecurity, computer use, and long-horizon agentic work, priced at $5 / $30 per 1M tokens.

MODEL B

Claude Opus 4.8

Anthropic · Claude Opus

Composite 73Intel 7026 rows12 sources

Anthropic's May 2026 flagship. Tops the Vals Index (70.17%) and the Artificial Analysis Intelligence Index (61.4). SWE-bench Verified 88.6%, Terminal-Bench 2.0 74.6%, 1M-token context, $15 / $75 per 1M tokens.

GPT-5.6 Sol3stats won

Tied0stats

Claude Opus 4.84stats won

Spec showdown

Capacity, price, freshness.

GPT-5.6 SolvsClaude Opus 4.8

Claude Opus 4.8 holds a narrow composite edge (73 vs 66), but the gap is small enough that other factors matter more. GPT-5.6 Sol has the higher Vals/AA intelligence score (73 vs 70). GPT-5.6 Sol is significantly cheaper at $5.0/1M input vs $15/1M input. Claude Opus 4.8's 1M context window dwarfs GPT-5.6 Sol's 0 — a meaningful difference for long-document or codebase work.

Composite score
GPT-5.6 Sol66Claude Opus 4.873Winner on this row
Intelligence (Vals/AA)
GPT-5.6 Sol73Winner on this rowClaude Opus 4.870
Context window
GPT-5.6 SolUnlistedClaude Opus 4.81MWinner on this row
Max output
GPT-5.6 Sol—Claude Opus 4.8128KWinner on this row
Input price / 1M (lower wins)
GPT-5.6 Sol$5.0Winner on this rowClaude Opus 4.8$15
Output speed (AA default API)
GPT-5.6 Sol67 t/sWinner on this rowClaude Opus 4.863 t/s
Time to first token (AA default API)
GPT-5.6 Sol76.91sClaude Opus 4.830.13sWinner on this row

Composite score

Intelligence (Vals/AA)

Context window

Unlisted

Max output

—

128K

Input price / 1M (lower wins)

$5.0

$15

Output speed (AA default API)

67 t/s

63 t/s

Time to first token (AA default API)

76.91s

30.13s

Capability grid

What each model can do.

Modalities

GPT-5.6 SolClaude Opus 4.8

Text●●

Image●—

Audio——

Video——

Code●●

Tool use●●

Reasoning●●

Access

GPT-5.6 SolClaude Opus 4.8

API●●

Consumer app●●

Open weights——

Managed cloud●●

On-device——

Family radar

Top score per benchmark family.

Reasoning

Coding

Agentic

100

Long context

Benchmark ranks

Every shared benchmark, side by side.

Reasoning

Artificial Analysis Intelligence Index#2/67 · #4/67

58.9%

55.7%

GPQA Diamond#3/69 · #51/69

94.1%

79.8%

Humanity's Last Exam#2/65 · #3/65

47.2%

45.7%

IFBench#27/57 · #41/57

72.65%

62.24%

Coding

SciCode#8/65 · #14/65

56.1%

53.5%

Agentic

Terminal-Bench#1/69 · #17/69

88.01%

74.6%

Vals Index#4/20 · #5/20

73.1%

70.4%

τ³-Bench Banking#21/64 · #30/64

32.99%

27.63%

Long context

AA-LCR#8/64 · #48/64

73.67%

58.3%

Performance

AA output speed#42/69 · #45/69

67 t/s

63 t/s

AA time to first token#6/69 · #13/69

76.91s

30.13s

Dossier facts

Dates, sources, fineprint.

GPT-5.6 SolClaude Opus 4.8

ProviderOpenAIAnthropic

FamilyGPT-5.6Claude Opus

Release date2026-07-092026-05-28

Knowledge cutoffunpublished2026-02-01

Context windowUnlisted1M

Max output—128K

Input price /1M$5.0$15

Output price /1M$30$75

Statusflagshipflagship

Composite score6673

Intelligence score7370

Intel sourcevalsvals

Benchmark rows1126

Source count212

Freshnessfreshfresh

Pricing checked2026-07-192026-06-01

Ecosystem

Which tools wrap each model.

GPT-5.6 Sol

Not listed in any tool yet.

Claude Opus 4.8

Verdict

Which model to actually pick.

Open GPT-5.6 Sol's dossier Open Claude Opus 4.8's dossier