Compare/GPT-5.5 Instant (May 2026) vs Claude Opus 4.7 (Non-reasoning, High Effort)

GPT-5.5 Instant (May 2026)vsClaude Opus 4.7 (Non-reasoning, High Effort)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

OpenAI

GPT-5.5 Instant (May 2026)

Input
$5/M
Output
$30/M
Speed
TTFT
Anthropic

Claude Opus 4.7 (Non-reasoning, High Effort)

Input
$6.25/M
Output
$25/M
Speed
48 tok/s
TTFT
1.27s

Winner by Category

Cheaper
Claude Opus 4.7 (Non-reasoning, High Effort)
Faster (tok/s)
Claude Opus 4.7 (Non-reasoning, High Effort)
Lower Latency
GPT-5.5 Instant (May 2026)
Benchmarks (2-5)
Claude Opus 4.7 (Non-reasoning, High Effort)

Pricing Comparison

MetricGPT-5.5 Instant (May 2026)Claude Opus 4.7 (Non-reasoning, High Effort)
Input ($/M tokens)$5$6.25
Output ($/M tokens)$30$25
Cost for 1M input + 100K output tokens:
GPT-5.5 Instant (May 2026)$8.00
Claude Opus 4.7 (Non-reasoning, High Effort)$8.75

Speed Comparison

Output Speed (tokens/s) — higher is better
GPT-5.5 Instant (May 2026)
Claude Opus 4.7 (Non-reasoning, High Effort)
48 tok/s
Time to First Token (seconds) — lower is better
GPT-5.5 Instant (May 2026)
Claude Opus 4.7 (Non-reasoning, High Effort)
1.27s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
41.851.8
Coding Index
45.153.1
Math Index
GPQA Diamond
84.6%88.5%
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
20.3%31.2%
SciCode
50.3%50.1%
IFBench
71.5%43.6%
TerminalBench
42.4%54.5%
GPT-5.5 Instant (May 2026)2 wins
5 winsClaude Opus 4.7 (Non-reasoning, High Effort)

Frequently Asked Questions

Which is cheaper, GPT-5.5 Instant (May 2026) or Claude Opus 4.7 (Non-reasoning, High Effort)?

Claude Opus 4.7 (Non-reasoning, High Effort) is cheaper overall. Its blended price (3:1 input/output ratio) is $10.94/M tokens vs $11.25/M for GPT-5.5 Instant (May 2026).

Which model performs better on benchmarks?

Claude Opus 4.7 (Non-reasoning, High Effort) wins 5 out of 12 benchmarks compared to 2 for GPT-5.5 Instant (May 2026). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Claude Opus 4.7 (Non-reasoning, High Effort) generates tokens faster at 48 tok/s vs 0 tok/s. GPT-5.5 Instant (May 2026) also has lower time-to-first-token (0.00s vs 1.27s).

When should I use GPT-5.5 Instant (May 2026) vs Claude Opus 4.7 (Non-reasoning, High Effort)?

Choose based on your priorities: Claude Opus 4.7 (Non-reasoning, High Effort) for lower cost, Claude Opus 4.7 (Non-reasoning, High Effort) for stronger benchmark performance, and Claude Opus 4.7 (Non-reasoning, High Effort) for faster generation. For latency-sensitive apps, check the TTFT comparison above.