Compare/Claude Opus 4.7 (Adaptive Reasoning, Max Effort) vs gpt-oss-120B (high)

Claude Opus 4.7 (Adaptive Reasoning, Max Effort)vsgpt-oss-120B (high)

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

Anthropic

Claude Opus 4.7 (Adaptive Reasoning, Max Effort)

Input
$0/M
Output
$0/M
Speed
TTFT
OpenAI

gpt-oss-120B (high)

Input
$0.15/M
Output
$0.6/M
Speed
208 tok/s
TTFT
0.54s

Winner by Category

Cheaper
Claude Opus 4.7 (Adaptive Reasoning, Max Effort)
Faster (tok/s)
gpt-oss-120B (high)
Lower Latency
Claude Opus 4.7 (Adaptive Reasoning, Max Effort)
Benchmarks (3-8)
gpt-oss-120B (high)

Pricing Comparison

MetricClaude Opus 4.7 (Adaptive Reasoning, Max Effort)gpt-oss-120B (high)
Input ($/M tokens)$0$0.15
Output ($/M tokens)$0$0.6
Cost for 1M input + 100K output tokens:
Claude Opus 4.7 (Adaptive Reasoning, Max Effort)$0.00
gpt-oss-120B (high)$0.21

Speed Comparison

Output Speed (tokens/s) — higher is better
Claude Opus 4.7 (Adaptive Reasoning, Max Effort)
gpt-oss-120B (high)
208 tok/s
Time to First Token (seconds) — lower is better
Claude Opus 4.7 (Adaptive Reasoning, Max Effort)
gpt-oss-120B (high)
0.54s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
33.3
Coding Index
52.528.6
Math Index
93.4
GPQA Diamond
78.2%
MMLU-Pro
80.8%
LiveCodeBench
87.8%
AIME 2025
93.4%
MATH-500
Humanity's Last Exam
18.5%
SciCode
54.5%38.9%
IFBench
69.0%
TerminalBench
51.5%23.5%
Claude Opus 4.7 (Adaptive Reasoning, Max Effort)3 wins
8 winsgpt-oss-120B (high)

Frequently Asked Questions

Which is cheaper, Claude Opus 4.7 (Adaptive Reasoning, Max Effort) or gpt-oss-120B (high)?

Claude Opus 4.7 (Adaptive Reasoning, Max Effort) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $0.26/M for gpt-oss-120B (high).

Which model performs better on benchmarks?

gpt-oss-120B (high) wins 8 out of 12 benchmarks compared to 3 for Claude Opus 4.7 (Adaptive Reasoning, Max Effort). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

gpt-oss-120B (high) generates tokens faster at 208 tok/s vs 0 tok/s. Claude Opus 4.7 (Adaptive Reasoning, Max Effort) also has lower time-to-first-token (0.00s vs 0.54s).

When should I use Claude Opus 4.7 (Adaptive Reasoning, Max Effort) vs gpt-oss-120B (high)?

Choose based on your priorities: Claude Opus 4.7 (Adaptive Reasoning, Max Effort) for lower cost, gpt-oss-120B (high) for stronger benchmark performance, and gpt-oss-120B (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.