Aider Polyglot Leaderboard: Coding Diff Compliance (2026)
Multi-language code editing and refactoring across diverse programming paradigms, evaluating both SEARCH/REPLACE diff format compliance and unit test verification.
Standardized evaluations, empirical telemetry, and reproducible agent benchmarks. Every score is captured under isolated execution harnesses without prompt leakage.
Breakdown across isolated execution harnesses matching Artificial Analysis methodologies.
Autonomous resolution of 500 real-world software engineering issues extracted from actively maintained open-source Python repositories, hand-verified by human software engineers.
| SOURCE & HARNESS | |||||
|---|---|---|---|---|---|
| #01 | GPT-6 Astra (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 55.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #02 | GPT-6 Astra (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 55.0% | $0.06 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
OpenAI Sandbox v4
|
| #03 | Claude Fable 5.1 (max with fallback) Anthropic | 54.6% | $0.08 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
SWE-agent v2.1
|
| #04 | Claude Fable 5.1 (max with fallback) Anthropic | 54.5% | — | 19 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #05 | Claude Opus 5 (max) Benchmarks, Price & Specs (Oct 2026) Anthropic | 52.6% | $0.11 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
SWE-agent v2.1
|
| #06 | Claude Opus 5 (max) Benchmarks, Price & Specs (Oct 2026) Anthropic | 52.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #07 | Muse Spark 1.3 (max) Meta | 49.0% | $0.03 | 1 Sep 2026 |
Pc_direct_sync →
Llama-3.1-Community
reported
Meta Agentic Code
|
| #08 | Muse Spark 1.3 (max) Meta | 49.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Llama-3.1-Community
reported
|
| #09 | GPT-5.6 Sol (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 48.0% | $0.04 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
OpenAI Sandbox v4
|
| #10 | GPT-5.6 Sol (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 48.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #11 | Qwen3.8 Max (0902) Alibaba | 46.0% | $0.05 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
Qwen-Agent Loop
|
| #12 | Qwen3.8 Max (0902) Alibaba | 46.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #13 | GLM-5.3 (max) Z AI | 45.8% | $0.03 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
Z-Agent Loop
|
| #14 | GLM-5.3 (max) Z AI | 45.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #15 | Grok 4.6 (high) SpaceXAI | 45.0% | $0.04 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
SpaceXAI Loop
|
| #16 | Grok 4.6 (high) SpaceXAI | 45.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #17 | Kimi K3 (max) Kimi | 44.8% | $0.04 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
Kimi Agent
|
| #18 | Kimi K3 (max) Kimi | 44.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #19 | Step 5 Preview StepFun | 44.6% | $0.02 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
StepFun Code Harness
|
| #20 | Step 5 Preview StepFun | 44.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #21 | GPT-5.6 Terra (max) OpenAI | 43.0% | $0.03 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
OpenAI Sandbox v4
|
| #22 | GPT-5.6 Terra (max) OpenAI | 43.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #23 | GLM-5.3-Flash Z AI | 42.6% | $0.01 | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
Z-Agent Open Loop
|
| #24 | GLM-5.3-Flash Z AI | 42.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #25 | Gemini 3.8 Flash (high) Google | 41.8% | $0.03 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
Google Code Harness
|
| #26 | Gemini 3.8 Flash (high) Google | 41.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #27 | Qwen3.8 2.4T A95B Alibaba | 40.8% | $0.05 | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
Qwen-Agent Open
|
| #28 | Qwen3.8 2.4T A95B Alibaba | 40.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #29 | Qwen3.8-Flash-Next Alibaba | 40.6% | $0.01 | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
Qwen-Agent Open
|
| #30 | Qwen3.8-Flash-Next Alibaba | 40.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #31 | DeepSeek V4.1 Flash (max) DeepSeek | 40.2% | $0.01 | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
OpenHands
|
| #32 | DeepSeek V4.1 Flash (max) DeepSeek | 40.2% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #33 | GPT-5.6 Luna (max) OpenAI | 38.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #34 | GPT-5.6 Luna (max) OpenAI | 38.8% | $0.00 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
OpenAI Sandbox v4
|
| #35 | Claude Sonnet 5 (max) Anthropic | 38.6% | $0.13 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
SWE-agent v2.1
|
| #36 | Claude Sonnet 5 (max) Anthropic | 38.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #37 | DeepSeek V4 Pro Benchmarks, Price & Specs (Oct 2026) DeepSeek | 36.8% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #38 | DeepSeek V4 Pro Benchmarks, Price & Specs (Oct 2026) DeepSeek | 36.8% | $0.02 | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
SWE-agent v2.1
|
| #39 | DeepSeek V4 Flash Vision (max) DeepSeek | 35.6% | $0.01 | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
OpenHands
|
| #40 | DeepSeek V4 Flash Vision (max) DeepSeek | 35.5% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #41 | Qwen3.8 27B (xhigh) Alibaba | 34.6% | $0.02 | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
Qwen-Agent Open
|
| #42 | Qwen3.8 27B (xhigh) Alibaba | 34.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #43 | K2 Horizon 375B A23B Institute of Foundation Models | 31.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #44 | K2 Horizon 375B A23B Institute of Foundation Models | 31.8% | $0.04 | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
IFM Agent Loop
|
| #45 | MiniMax-M3 MiniMax | 30.6% | $0.02 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
MiniMax Code Loop
|
| #46 | MiniMax-M3 MiniMax | 30.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #47 | Gemini 3.1 Pro Benchmarks, Price & Specs (Oct 2026) Google | 30.2% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #48 | Gemini 3.1 Pro Benchmarks, Price & Specs (Oct 2026) Google | 30.2% | $0.02 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
Google Code Harness
|
| #49 | Inkling Thinking Machines | 26.6% | $0.02 | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
Thinking Machines
|
| #50 | Inkling Thinking Machines | 26.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
In compliance with upstream dataset licenses, all evaluated telemetry rows are credited to their primary sources:
Editorial
MIT
Autonomous terminal command-line navigation, multi-step debugging, environment triage, and tool execution in isolated Docker containers.
| SOURCE & HARNESS | |||||
|---|---|---|---|---|---|
| #01 | Claude Fable 5.1 (max with fallback) Anthropic | 52.0% | — | 19 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #02 | Claude Fable 5.1 (max with fallback) Anthropic | 52.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #03 | GPT-6 Astra (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 51.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #04 | GPT-6 Astra (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 51.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #05 | Claude Opus 5 (max) Benchmarks, Price & Specs (Oct 2026) Anthropic | 50.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #06 | Claude Opus 5 (max) Benchmarks, Price & Specs (Oct 2026) Anthropic | 50.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #07 | Muse Spark 1.3 (max) Meta | 47.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Llama-3.1-Community
reported
standard
|
| #08 | Muse Spark 1.3 (max) Meta | 47.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Llama-3.1-Community
reported
|
| #09 | GPT-5.6 Sol (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 46.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #10 | GPT-5.6 Sol (max) Benchmarks, Price & Specs (Oct 2026) OpenAI | 46.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #11 | Qwen3.8 Max (0902) Alibaba | 44.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #12 | Qwen3.8 Max (0902) Alibaba | 44.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #13 | GLM-5.3 (max) Z AI | 44.2% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #14 | GLM-5.3 (max) Z AI | 44.2% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #15 | Step 5 Preview StepFun | 44.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #16 | Step 5 Preview StepFun | 44.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #17 | Kimi K3 (max) Kimi | 43.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #18 | Kimi K3 (max) Kimi | 43.8% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #19 | Grok 4.6 (high) SpaceXAI | 43.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #20 | Grok 4.6 (high) SpaceXAI | 43.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #21 | GLM-5.3-Flash Z AI | 42.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
standard
|
| #22 | GLM-5.3-Flash Z AI | 42.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #23 | GPT-5.6 Terra (max) OpenAI | 41.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #24 | GPT-5.6 Terra (max) OpenAI | 41.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #25 | Gemini 3.8 Flash (high) Google | 40.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #26 | Gemini 3.8 Flash (high) Google | 40.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #27 | DeepSeek V4.1 Flash (max) DeepSeek | 40.2% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
standard
|
| #28 | DeepSeek V4.1 Flash (max) DeepSeek | 40.2% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #29 | Qwen3.8-Flash-Next Alibaba | 40.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
standard
|
| #30 | Qwen3.8-Flash-Next Alibaba | 40.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #31 | Qwen3.8 2.4T A95B Alibaba | 39.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
standard
|
| #32 | Qwen3.8 2.4T A95B Alibaba | 39.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #33 | Claude Sonnet 5 (max) Anthropic | 38.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #34 | Claude Sonnet 5 (max) Anthropic | 38.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #35 | GPT-5.6 Luna (max) OpenAI | 37.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #36 | GPT-5.6 Luna (max) OpenAI | 37.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #37 | DeepSeek V4 Pro Benchmarks, Price & Specs (Oct 2026) DeepSeek | 35.5% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #38 | DeepSeek V4 Pro Benchmarks, Price & Specs (Oct 2026) DeepSeek | 35.5% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
standard
|
| #39 | DeepSeek V4 Flash Vision (max) DeepSeek | 34.5% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
|
| #40 | DeepSeek V4 Flash Vision (max) DeepSeek | 34.5% | — | 1 Sep 2026 |
Pc_direct_sync →
MIT
reported
standard
|
| #41 | Qwen3.8 27B (xhigh) Alibaba | 33.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #42 | Qwen3.8 27B (xhigh) Alibaba | 33.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
standard
|
| #43 | K2 Horizon 375B A23B Institute of Foundation Models | 30.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
|
| #44 | K2 Horizon 375B A23B Institute of Foundation Models | 30.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Apache-2.0
reported
standard
|
| #45 | Gemini 3.1 Pro Benchmarks, Price & Specs (Oct 2026) Google | 30.2% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #46 | Gemini 3.1 Pro Benchmarks, Price & Specs (Oct 2026) Google | 30.2% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #47 | MiniMax-M3 MiniMax | 30.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #48 | MiniMax-M3 MiniMax | 30.0% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
| #49 | Inkling Thinking Machines | 25.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
|
| #50 | Inkling Thinking Machines | 25.5% | — | 1 Sep 2026 |
Pc_direct_sync →
Proprietary
reported
standard
|
In compliance with upstream dataset licenses, all evaluated telemetry rows are credited to their primary sources:
Apache-2.0
Detailed specifications for each benchmark in our suite: evaluation scaffolding, test environments, resolution criteria, and known limitations.
Multi-language code editing and refactoring across diverse programming paradigms, evaluating both SEARCH/REPLACE diff format compliance and unit test verification.
Empirical benchmark of all 22 active free models on OpenRouter (:free) across N=100 availability telemetry probes and 25 deterministic coding challenges.
DeepSeek V3 has no published hallucination score, so we ran 60 prompts against both models and graded every answer. Full results, prompts and method inside.
Algorithmic problem solving, complex mathematical reasoning, and edge-case handling on brand-new competitive programming problems published after model training cutoff dates.
Every new LLM benchmark and what it reveals about models, plus the latest coding scores. Updated weekly.
Live 2026 Chatbot Arena rankings, category charts, confidence intervals, and complete methodology breakdown of Bradley-Terry, AutoEval, and Style Control.
Local quantized LLM performance running under Ollama and llama.cpp on consumer workstations, measuring empirical pass rates, edit-format compliance failure rates, tokens/sec, and peak RAM consumption.
Autonomous resolution of real-world GitHub issues across popular open-source Python repositories, verified by human software engineers for task clarity and deterministic unit-test pass/fail.
Autonomous command-line execution, shell tool use, multi-step debugging, environment triage, and terminal state evaluation in isolated Linux sandboxes.