IFBench

🏆 Leaderboard

As of August 31, 2026, Qwen3.8 Max is #1 for IFBench at 82.8%. Ranked by IFBench, a harder instruction-following set than IFEval. 36 models in this index have a published IFBench score. IFBench leaderboard: rank models by IFBench next to live API token prices.

Updated August 31, 2026345 models36 providers

IFBench vs price

36 models. Left is cheaper. Up is a higher score. The line is the best score you can buy at each price — a dot under it is a worse deal than something on the line.

Best score at each price#1 on this board


Qwen3.8 MaxOSS Qwen · Open Source	82.8%	$8.00
Inkling-SmallOSS Thinking Machines · Open Source · via Thinking Machines Lab	82.2%	$1.50
Nemotron 3 Ultra (550B A55B)OSS NVIDIA · Open Source · via OpenRouter	81.7%	$2.70
Qwen3.8-Flash-NextOSS Qwen · Open Source	81.3%	$0.62
Qwen3.8 Flash Qwen · Proprietary	81.3%	$0.62
Hermes 3 70BOSS Nous Research · Open Source	81.2%	$1.75
Nova 2 Pro Amazon · Proprietary	80.2%	$11.25
Qwen3.8-27BOSS Qwen · Open Source	79.5%	$3.65
Qwen3.7-Plus Qwen · Proprietary	79.1%	$1.60
Qwen3.7 Max Qwen · Proprietary	79.1%	$5.00
Muse Glimmer-30BOSS Meta · Open Source	77%	$1.85
Qwen3.5-397B-A17BOSS Qwen · Open Source	76.5%	$4.20
Qwen3.5-27BOSS Qwen · Open Source	76.5%	$2.70
Qwen3.5-122B-A10BOSS Qwen · Open Source	76.1%	$3.60
MAI-Code-1-Flash Microsoft · Proprietary	75%	$0.75
Qwen3.6 Plus Qwen · Proprietary	74.2%	$3.50
Command A+OSS Cohere · Open Source	74%	$12.50
Nemotron 3 Super (120B A12B)OSS NVIDIA · Open Source · via OpenRouter	72.6%	$0.54
Nemotron 3.5 Lightning (30B A3B)OSS NVIDIA · Open Source	71.9%	$0.25
Mercury 2 Inception · Proprietary	71%	$1.00
Nova 2 Lite Amazon · Proprietary	70.8%	$2.80
Qwen3.5-35B-A3BOSS Qwen · Open Source	70.2%	$2.25
MiniMax M2.1OSS MiniMax · Open Source	70%	$1.50
GPT OSS 120B HighOSS OpenAI · Open Source	69.5%	$0.60
Mistral Medium 3.5OSS Mistral · Open Source · via Mistral AI	69%	$9.00
MAI-Thinking-1 Microsoft · Proprietary	69%	$0.75
Nova 2 Omni Amazon · Proprietary	68.7%	$2.80
K-EXAONE-236B-A23B LG AI Research · Proprietary	67.3%	$1.60
Qwen3.5-9BOSS Qwen · Open Source · via OpenRouter	64.5%	$0.25
Qwen3.5-4BOSS Qwen · Open Source	59.2%	$0.20
LFM2.5-2.6BOSS Liquid AI · Open Source	59.2%	$0.04
Mistral Small 4OSS Mistral · Open Source · via Mistral AI	48%	$0.75
Qwen3.5-2BOSS Qwen · Open Source	41.3%	$0.16
Nova 2 Sonic Amazon · Proprietary	37.5%	$3.08
LFM2.5-VL-3BOSS Liquid AI · Open Source	25.8%	$0.15
Qwen3.5-0.8BOSS Qwen · Open Source	21%	$0.13
ChatGPT-4o Latest OpenAI · Proprietary	—	$12.50
Claude 3 Haiku Anthropic · Proprietary	—	$1.50
Claude 3 Opus Anthropic · Proprietary	—	$90.00
Claude 3 Sonnet Anthropic · Proprietary	—	$18.00
Claude 3.5 Haiku Anthropic · Proprietary	—	$4.80
Claude 3.5 Sonnet Anthropic · Proprietary	—	$18.00
Claude 3.5 Sonnet Anthropic · Proprietary	—	$18.00
Claude 3.7 Sonnet Anthropic · Proprietary	—	$18.00
Claude Fable 5 Anthropic · Proprietary	—	$60.00
Claude Haiku 4.5 Anthropic · Proprietary	—	$6.00
Claude Mythos 5 Anthropic · Proprietary	—	$60.00
Claude Mythos Preview Anthropic · Proprietary	—	$60.00
Claude Opus 4 Anthropic · Proprietary	—	$90.00
Claude Opus 4.1 Anthropic · Proprietary	—	$90.00

Showing 1–50 of 345 models

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The index

All Large Language Models

345 models across 36 providers. Search or jump to a lab — every model page stays linked here.

Cursor

2 models

Composer 2 Composer 2 Fast

xAI

17 models

Grok 4.6 Grok 4.5 Grok 4.3 Grok-4.1 Grok-4.1 Fast Non-Reasoning Grok-4.1 Fast Reasoning Grok-4.1 Thinking Grok 4 Fast Grok Code Fast 1 Grok-4 Fast Non-Reasoning Grok-4 Fast Reasoning Grok-4 Grok-3 Grok-3 Mini Grok-2 Grok-1.5V Grok-1.5

MiniMax

7 models

MiniMax M3 MiniMax M2.7 MiniMax M2.5 MiniMax M2.1 MiniMax M2 MiniMax M1 40K MiniMax M1 80K

Qwen

55 models

Qwen3.8 Flash Qwen3.8-Flash-Next Qwen3.8-27B Qwen3.8-2.4T-A95B Qwen3.8 Max Qwen3.7 Flash Qwen3.7-Plus Qwen3.7 Max Qwen3.6-27B Qwen3.6-35B-A3B Qwen3.6 Plus Qwen3.5-0.8B Qwen3.5-2B Qwen3.5-4B Qwen3.5-9B Qwen3.5-122B-A10B Qwen3.5-27B Qwen3.5-35B-A3B Qwen3.5-397B-A17B Qwen3 Max Qwen3 VL 235B A22B Instruct Qwen3 VL 235B A22B Thinking Qwen3 VL 30B A3B Instruct Qwen3 VL 30B A3B Thinking Qwen3 VL 32B Instruct Qwen3 VL 32B Thinking Qwen3 VL 4B Instruct Qwen3 VL 4B Thinking Qwen3 VL 8B Instruct Qwen3 VL 8B Thinking Qwen3-Next-80B-A3B-Instruct Qwen3-Next-80B-A3B-Thinking Qwen3-235B-A22B-Thinking-2507 Qwen3-235B-A22B-Instruct-2507 Qwen3 235B A22B Qwen3 30B A3B Qwen3 32B Qwen2.5-Omni-7B QwQ-32B Qwen2.5 VL 32B Instruct Qwen3-Coder 480B A35B Instruct Qwen2.5 VL 72B Instruct Qwen2.5 VL 7B Instruct Qwen3-Coder QvQ-72B-Preview QwQ-32B-Preview Qwen2.5 14B Instruct Qwen2.5 32B Instruct Qwen2.5 72B Instruct Qwen2.5 7B Instruct Qwen2.5-Coder 32B Instruct Qwen2.5-Coder 7B Instruct Qwen2-VL-72B-Instruct Qwen2 72B Instruct Qwen2 7B Instruct

AI21 Labs

2 models

Jamba 1.5 Large Jamba 1.5 Mini

Amazon

7 models

Nova 2 Lite Nova 2 Omni Nova 2 Pro Nova 2 Sonic Nova Lite Nova Micro Nova Pro

Baidu

2 models

ERNIE 5.0 ERNIE 4.5

ByteDance

4 models

Seed 2.1 Pro Seed 2.1 Turbo Seed 2.0 Lite Seed 2.0 Pro

Cohere

4 models

North Micro Vision Instruct North Mini Code 1.0 Command A+Command R+

IBM

2 models

IBM Granite 4.0 Tiny Preview Granite 3.3 8B Instruct

Inception

1 models

Mercury 2

inclusionAI

1 models

Ling-3.0-flash

LG AI Research

1 models

K-EXAONE-236B-A23B

Liquid AI

2 models

LFM2.5-VL-3B LFM2.5-2.6B

Meituan

4 models

LongCat-Flash-Lite LongCat-Flash-Thinking-2601 LongCat-Flash-Thinking LongCat-Flash-Chat

Microsoft

9 models

MAI-Code-1.1-Flash MAI-Code-1-Flash MAI-Thinking-1 Phi 4 Mini Phi-4-multimodal-instruct Phi 4 Phi-3.5-mini-instruct Phi-3.5-MoE-instruct Phi-3.5-vision-instruct

Moonshot AI

11 models

Kimi K3 Kimi K2.7 Code Kimi K2.7 Code HighSpeed Kimi K2.6 Kimi K2.5 Kimi K2 0905 Kimi K2-Instruct-0905 Kimi K2-Thinking-0905 Kimi K2 Base Kimi K2 Instruct Kimi-k1.5

Nous Research

1 models

Hermes 3 70B

NVIDIA

9 models

Nemotron 3.5 Lightning (30B A3B)Nemotron 3 Ultra (550B A55B)Nemotron 3 Super (120B A12B)Nemotron 3 Nano (30B A3B)Nemotron Nano 9B v2 Llama 3.1 Nemotron Ultra 253B v1 Llama 3.1 Nemotron Nano 8B V1 Llama-3.3 Nemotron Super 49B v1 Llama 3.1 Nemotron 70B Instruct

OpenBMB

1 models

MiniCPM-SALA

Poolside

2 models

Laguna S 2.1 Laguna XS 2.1

Sakana AI

1 models

Sakana Namazu

Sarvam AI

2 models

Sarvam-105B Sarvam-30B

StepFun

2 models

Step-3.5-Flash Step3-VL-10B

Tencent

1 models

Hy3

Thinking Machines

1 models

Inkling-Small

Unisound

1 models

Upstage

1 models

Solar Pro 4

Xiaomi

5 models

MiMo-V2.5-Pro MiMo-V2.5 MiMo-V2-Omni MiMo-V2-Pro MiMo-V2-Flash

Which model leads IFBench right now?

As of August 31, 2026, Qwen3.8 Max by Qwen is #1 for IFBench at 82.8%. Ranked by IFBench, a harder instruction-following set than IFEval. This board also tracks IFBench. Next on the same board: Inkling-Small and Nemotron 3 Ultra (550B A55B). This ifbench leaderboard ranks models by IFBench. Scores come from public evals. Prices are the live API rates in the table above.

Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); Anthropic Claude API pricing (https://platform.claude.com/docs/en/about-claude/pricing); Gemini API pricing (https://ai.google.dev/gemini-api/docs/pricing)

Top 8 for ifbench. Ranked by IFBench, a harder instruction-following set than IFEval. Input and output are dollars per million tokens.
Rank	Model	IFBench	Input /M	Output /M
1	Qwen3.8 Max	82.8%	$2.00	$6.00
2	Inkling-Small	82.2%	$0.30	$1.20
3	Nemotron 3 Ultra (550B A55B)	81.7%	$0.50	$2.20
4	Qwen3.8 Flash	81.3%	$0.15	$0.47
5	Qwen3.8-Flash-Next	81.3%	$0.15	$0.47
6	Hermes 3 70B	81.2%	$0.35	$1.40
7	Nova 2 Pro	80.2%	$1.25	$10.00
8	Qwen3.8-27B	79.5%	$0.45	$3.20

Related LLM leaderboards

LLM Leaderboard Coding Math Agentic Reasoning Writing Science Finance Long Context Vision Open Source

Individual benchmark pages

Rank one eval at a time. All LLM benchmarks.

HLE SWE Bench Humanity's Last Exam (No Tools)Humanity's Last Exam (With Tools)Terminal-Bench 2.0 Terminal-Bench Terminal-Bench 2.1 Terminal-Bench 2 Terminal-Bench 3.0 ARC-AGI-1 Verified

IFBench FAQ

Who ranks #1 on the IFBench leaderboard?

As of August 31, 2026, Qwen3.8 Max by Qwen ranks #1 on IFBench at 82.8%. API pricing is $2.00/M input and $6.00/M output.

What are the top models on IFBench?

The current IFBench ranking as of August 31, 2026 is 1. Qwen3.8 Max at 82.8%; 2. Inkling-Small at 82.2%; 3. Nemotron 3 Ultra (550B A55B) at 81.7%.

Which ifbench model is the cheapest?

LFM2.5-2.6B is the cheapest scored model on this ifbench leaderboard at $0.02/M input and $0.02/M output ($0.04 blended). Qwen3.8 Max still leads IFBench at 82.8%.

Should I always pick the #1 IFBench model?

Not automatically. Qwen3.8 Max leads IFBench, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh IFBench against input/output price, context window, and related evals.

How often is the IFBench leaderboard updated?

Scores and API prices on this page are refreshed from published evals and provider rates. The snapshot is labeled August 31, 2026. Treat it as a current index, not a one-off blog post.

What is IFBench?

IFBench is a public LLM eval (IFBench, a harder instruction-following set than IFEval.). This page ranks models that have published a score, next to live API prices.

Where is the IFBench leaderboard?

This page is the IFBench leaderboard. Models are sorted by IFBench, with input and output token prices on the same row so you can weigh score against cost. Official boards often omit price; that comparison is the point of this index.

How is this IFBench ranking different from the official board?

Official eval pages own the methodology. This page keeps the published IFBench score next to live API $/M so you can pick a production SKU, not only a trophy number.

IFBench vs price

You found the model. Now ship the product.

All Large Language Models

OpenAI

Anthropic

Google

Cursor

xAI

DeepSeek

MiniMax

Qwen

AI21 Labs

Amazon

Baidu

ByteDance

Cohere

IBM

Inception

inclusionAI

LG AI Research

Liquid AI

Meituan

Meta

Microsoft

Mistral

Moonshot AI

Nous Research

NVIDIA

OpenBMB

Poolside

Sakana AI

Sarvam AI

StepFun

Tencent

Thinking Machines

Unisound

Upstage

Xiaomi

Z AI

Which model leads IFBench right now?

Related LLM leaderboards

Individual benchmark pages

IFBench FAQ

Who ranks #1 on the IFBench leaderboard?

What are the top models on IFBench?

Which ifbench model is the cheapest?

Should I always pick the #1 IFBench model?

How often is the IFBench leaderboard updated?

What is IFBench?

Where is the IFBench leaderboard?

How is this IFBench ranking different from the official board?