Claude 3 Opus vs Leanstral

Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.

Benchmark data for one or both models is coming soon. This page currently shows metadata and pricing where BenchLM has it, and score-level comparisons will populate as public benchmark results land.

BenchLM does not have sourced benchmark coverage for Leanstral yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.

Leanstral has the larger context window at 256K, compared with 200K for Claude 3 Opus.

Quick Verdict

Benchmark data for Claude 3 Opus and Leanstral is coming soon on BenchLM.

Agentic

Coming soon

Benchmark data for this category is coming soon.

Coding

Claude 3 Opus

Claude 3 Opus

84.9

Leanstral

21.9

84.9%
HumanEval
Coming soon
Coming soon
FLTEval
21.9%

Multimodal & Grounded

Coming soon

Benchmark data for this category is coming soon.

Reasoning

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

59%
SimpleQA
Coming soon
57%
MuSR
Coming soon

Knowledge

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

85.7%
MMLU
Coming soon
50.4%
GPQA
Coming soon
59%
SuperGPQA
Coming soon
57%
OpenBookQA
Coming soon
67.9%
MMLU-Pro
Coming soon

Instruction Following

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

86.7%
IFEval
Coming soon

Multilingual

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

83.1%
MGSM
Coming soon

Mathematics

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

61%
AIME 2023
Coming soon
7.9%
AIME 2024
Coming soon
62%
AIME 2025
Coming soon
57%
HMMT Feb 2023
Coming soon
59%
HMMT Feb 2024
Coming soon
58%
HMMT Feb 2025
Coming soon
60%
BRUMO 2025
Coming soon

Frequently Asked Questions

Can I compare Claude 3 Opus and Leanstral on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.

Why does this comparison show “coming soon”?

BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.

What data is available for Claude 3 Opus and Leanstral today?

Leanstral: $0.00 input / $0.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.

Last updated: March 17, 2026

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