2026-10-20UPDATEPlatform updated: 52 models tracked across 42 independent benchmarks including CorpFin • 2026-10-20BENCHCorpFin added to benchmark suite — long credit agreement comprehension evaluations live • 2026-10-19MODELClaude Sonnet 5.5 and Opus 5.5 achieve 75.9% and 75.8% on Excel Modeling Benchmark v1.1 • 2026-10-19MODELTax Agent Bench updated: Claude Fable 5.1 (49.2%) and Gemini 4 Argon (44.6%) lead corporate tax research • 2026-10-18MODELGemini 4 Argon claims #1 rank on Finance Agent (v2) with 65.4% • 2026-10-13MODELGoogle launches Gemini 4 Argon with 1M-token output limit and native multimodal reasoning • 2026-10-06MODELAnthropic completes Claude 5.5 generation with Claude Haiku 5.5, Opus 5.5, and Sonnet 5.5 • 2026-10-20UPDATEPlatform updated: 52 models tracked across 42 independent benchmarks including CorpFin • 2026-10-20BENCHCorpFin added to benchmark suite — long credit agreement comprehension evaluations live • 2026-10-19MODELClaude Sonnet 5.5 and Opus 5.5 achieve 75.9% and 75.8% on Excel Modeling Benchmark v1.1 • 2026-10-19MODELTax Agent Bench updated: Claude Fable 5.1 (49.2%) and Gemini 4 Argon (44.6%) lead corporate tax research • 2026-10-18MODELGemini 4 Argon claims #1 rank on Finance Agent (v2) with 65.4% • 2026-10-13MODELGoogle launches Gemini 4 Argon with 1M-token output limit and native multimodal reasoning • 2026-10-06MODELAnthropic completes Claude 5.5 generation with Claude Haiku 5.5, Opus 5.5, and Sonnet 5.5 •
Tier 3numerical

IOI

International Olympiad in Informatics algorithmic competitive programming tasks.

Variable tasks
8 models evaluated
Updated 2026
91.7%
Top Score
Top model
Claude Opus 5

Model Rankings

financebenchmark.ai · IOI
Anthropic logo
OpenAI logo
Anthropic logo
Google logo
OpenAI logo
OpenAI logo
Meta logo
Alibaba logo
65.3%
🥇Anthropic logoAnthropicClaude Opus 591.7%
🥈OpenAI logoOpenAIGPT-5.6 Sol86.7%
🥉Anthropic logoAnthropicClaude Fable 572.3%
4Google logoGoogleGemini 3.5 Flash Lite26.2%
5OpenAI logoOpenAIGPT-5.6 Luna72.9%
6OpenAI logoOpenAIGPT-5.6 Terra65.3%
7Meta logoMetaMuse Spark 1.249.5%
8Alibaba logoAlibabaQwen 3.8 MaxOPEN73.0%
Full Results Table
#ModelOverallSourceDate
🥇
Anthropic logoClaude Opus 5
Anthropic
91.7IOI (2026)2026-07
🥈
OpenAI logoGPT-5.6 Sol
OpenAI
86.7IOI (2026)2026-07
🥉
Alibaba logoQwen 3.8 MaxOPEN
Alibaba
73.0IOI (2026)2026-08
4
OpenAI logoGPT-5.6 Luna
OpenAI
72.9IOI (2026)2026-07
5
Anthropic logoClaude Fable 5
Anthropic
72.3IOI (2026)2026-06
6
OpenAI logoGPT-5.6 Terra
OpenAI
65.3IOI (2026)2026-07
7
Meta logoMuse Spark 1.2
Meta
49.5IOI (2026)2026-08
8
Google logoGemini 3.5 Flash Lite
Google
26.2IOI (2026)2026-07