Model vs model

GPT-5.5 vs Claude Opus 4.7

A debate-ready pair page: current winner, strongest alternative, decisive benchmarks, and the warning that should travel with the claim.

Use case · Everyday chatbot
Winner · GPT-5.5
Sources · All public sources

GPT-5.5 leads this compare set for everyday chatbot.

Thin verified coverage0 shared benchmarks are still too close to call, so the win stays conditional. This compare uses all public sources, with provider-official evidence labeled separately.

Left caseGPT-5.5 wins 0 visible benchmarks · Coding

Right caseClaude Opus 4.7 wins 1 visible benchmarks · Coding · Vision understanding

Warning to share0 shared benchmarks are still too close to call, so the win stays conditional. This compare uses all public sources, with provider-official evidence labeled separately.

Close calls0 shared benchmarks are still too close to call.

GPT-5.5 case

Coding

Claude Opus 4.7 case

Coding
Vision understanding

What changes the outcome

GPT-5.5: 25 visible benchmark gaps still leave room for the result to move.
Claude Opus 4.7: 22 visible benchmark gaps still leave room for the result to move.

Why this result is surprising

The visible shared evidence is more decisive than usual for this compare set.
Very few shared benchmarks are decisively separating these models.

Why this is not a clean win

0 shared benchmarks are still too close to call, so the win stays conditional. This compare uses all public sources, with provider-official evidence labeled separately.
Claude Opus 4.7 remains the strongest alternative once you change use case, mode, or missing-evidence assumptions.

Open full compare workspace Open evidence page Open disagreement page

Decisive benchmarks

15 of 40 benchmarks


Text Arena AR · rating Text · Chat / text	1,462n/a	1,478n/a	n/a
Code Arena AR · rating Code · Coding	1,439n/a	1,559n/a	n/a
Vision Arena AR · rating Vision · Vision understanding	1,282n/a	1,303n/a	n/a
WebDev Arena AR · rating Code · Coding	1,439n/a	1,559n/a	n/a
Search Arena AR · rating Search · Search / tool use	1,239n/a	1,237n/a	n/a
Document Arena AR · rating Document · Document understanding	1,492n/a	1,509n/a	n/a
Intelligence Index AA · index Text · Chat / text	41n/a	52n/a	n/a
Time to first token AA · s Text · Chat / text	88.88sn/a	11.36sn/a	n/a
Debugging BB · % Code · Coding	77.5%n/a	86.2%n/a	n/a
Security BB · % Code · Coding	85.3%n/a	76%n/a	n/a
BS pushback BB · % Text · Professional reasoning	88%n/a	75.5%n/a	n/a
Speed throughput BB · t/s Code · Coding	152.3 t/sn/a	116.4 t/sn/a	n/a
Speed TTFT BB · ms Code · Coding	930.00msn/a	852.00msn/a	n/a
Terminal-Bench 2.0 TERMINAL-BENCH · % Code · Coding	82%n/a	38%n/a	n/a
HiL-Bench SL · % Code · Coding	29.1%n/a	27.7%80%	n/a

Text Arena

AR · rating

Text · Chat / text

1,462n/a

1,478n/a

n/a

Code Arena

AR · rating

Code · Coding

1,439n/a

1,559n/a

n/a

Vision Arena

AR · rating

Vision · Vision understanding

1,282n/a

1,303n/a

n/a

WebDev Arena

AR · rating

Code · Coding

1,439n/a

1,559n/a

n/a

Search Arena

AR · rating

Search · Search / tool use

1,239n/a

1,237n/a

n/a

Document Arena

AR · rating

Document · Document understanding

1,492n/a

1,509n/a

n/a

Intelligence Index

AA · index

Text · Chat / text

41n/a

52n/a

n/a

Time to first token

AA · s

Text · Chat / text

88.88sn/a

11.36sn/a

n/a

Debugging

BB · %

Code · Coding

77.5%n/a

86.2%n/a

n/a

Security

BB · %

Code · Coding

85.3%n/a

76%n/a

n/a

BS pushback

BB · %

Text · Professional reasoning

88%n/a

75.5%n/a

n/a

Speed throughput

BB · t/s

Code · Coding

152.3 t/sn/a

116.4 t/sn/a

n/a

Speed TTFT

BB · ms

Code · Coding

930.00msn/a

852.00msn/a

n/a

Terminal-Bench 2.0

TERMINAL-BENCH · %

Code · Coding

82%n/a

38%n/a

n/a

HiL-Bench

SL · %

Code · Coding

29.1%n/a

27.7%80%

n/a

GPT-5.5 vs Claude Opus 4.7

GPT-5.5 leads this compare set for everyday chatbot.

GPT-5.5 case

Claude Opus 4.7 case

What changes the outcome

Why this result is surprising

Why this is not a clean win

Post the claim with the evidence attached.

Open or copy the stable surfaces

Use the exact public framing

Pick the voice before you post

Compose a post that keeps the warning attached

Decisive benchmarks

Loading model comparison.

GPT-5.5 vs Claude Opus 4.7

GPT-5.5 leads this compare set for everyday chatbot.

GPT-5.5 case

Claude Opus 4.7 case

What changes the outcome

Why this result is surprising

Why this is not a clean win

Post the claim with the evidence attached.

Open or copy the stable surfaces

Use the exact public framing

Pick the voice before you post

Compose a post that keeps the warning attached

Decisive benchmarks