Coding

Models and tools that write, edit and review code, from completion in the editor to coding agents. The atlas has logged 310 launches and papers on it since 22 March 2023, 151 of them in 2026.

Anthropic, Google DeepMind and OpenAI have the most.

Key launches

The 60 most significant of 310, newest first. Every launch in the atlas

  • Claude Haiku 5.5 Anthropic · 7 October 2026
    Anthropic released Claude Haiku 5.5, its smallest model, with a 1M token context window at $0.10 per million input tokens and $0.50 output, about 75% cheaper than Haiku 4.5 on…
  • Mistral Large 4 Mistral AI · 6 October 2026
    Mistral launched a public preview of Mistral Large 4 (le Chonk), a 1 trillion parameter multimodal model with 49 billion active parameters, with open weights due by the end of…
  • Beam Reflection AI · 5 October 2026
    Reflection AI unveiled Beam, its first open-weight model, a 501B parameter mixture-of-experts model with 23B active parameters, aimed at coding and agent tasks.
  • Gemini 4 Argon Google DeepMind · 30 September 2026
    Gemini 4 Argon, a new frontier model with a 1M-token output limit, scores 77.9% on DeepSWE v1.1; released first to vetted cyber defenders via Fairwind.
  • GPT-Synopsys Synopsys / OpenAI · 30 September 2026
    Synopsys and OpenAI announced a multi-year partnership to build GPT-Synopsys, a specialized model that operates Synopsys EDA tools to run chip design workflows, with shared…
  • GLM-5.3 and the spread of advanced cyber capabilities Anthropic · 29 September 2026
    Anthropic finds open-weights GLM-5.3 hijacks control flow in 4% of trials vs 6% for Mythos Preview, and its safeguards fall 64-100% of the time.
  • Claude Opus 5.5 Anthropic · 22 September 2026
    Claude Opus 5.5 matches Fable 5.1 on most work, costs 40% less than Opus 5, and scores 66.4% on Terminal-Bench 4.0.
  • GPT-6 Sol and GPT-6 Luna OpenAI · 22 September 2026
    GPT-6 Sol and Luna bring Astra-era training to cheaper tiers at half the price of their GPT-5.6 equivalents.
  • MiMo-V2.6-Pro and V2.6-Flash Xiaomi (MiMo) · 21 September 2026
    Omni-modal 1.02T (Pro) and 310B (Flash) MIT-licensed models; Artificial Analysis rated Pro 46, top of open-weight models at launch.
  • DeepSeek-V4.1-Flash DeepSeek · 10 September 2026
    Native-multimodal 552B-backbone model with a causal encoder-decoder (8B active in prefill, 16B in decode) and a KV cache of 890 bytes per token.
  • Cognition $2B+ Series E at $48B Cognition · 8 September 2026
    Cognition raises over $2B at a $48B valuation led by a16z and Accel; run-rate revenue about $900M, up from $492M in May.
  • Formalizing Fermat's Last Theorem Anthropic · 4 September 2026
    Claude agents wrote the first complete computer-checked Lean proof of Fermat's Last Theorem in about 11 days, with 13 million lines of Lean.
  • GPT-6 Astra OpenAI · 3 September 2026
    GPT-6 Astra, OpenAI's first model rated Critical for cybersecurity, claims 97.6% on FrontierMath Tier 4 and 99.9% on ARC-AGI-3.
  • Claude Fable 5.1 and Mythos 5.1 Anthropic · 1 September 2026
    Claude Fable 5.1 lifts Terminal-Bench 4.0 from 42.0% to 55.8% and cuts cache-read price 75%; Mythos 5.1 is the same model with fewer safeguards.
  • Hy4 preview Tencent · 28 August 2026
    770B-total, 49B-active open MoE with 1M-token context, Gated DeepSeek Sparse Attention and hyper-connections, under Apache-2.0.
  • Qwen3.8-Flash-Next Alibaba (Qwen) · 26 August 2026
    125B-parameter (6B active) multimodal MoE that previews the Qwen4 architecture, built on Gated DeltaNet plus Qwen Sparse Attention, with 51B of N-gram embeddings.
  • SpaceX completes Cursor acquisition SpaceX / Anysphere (Cursor) · 14 August 2026
    SpaceX closes the $60B Anysphere deal; Cursor becomes a wholly owned subsidiary inside the new SpaceXAI unit, and Grok 4.6 ships in Cursor.
  • Qwen3.8-2.4T-A95B (open weights) Alibaba (Qwen) · 12 August 2026
    Open weights of a 2.4T-parameter, 95B-active MoE: Terminal Bench 2.1 86.6 and SWE-bench Pro 67.7, under a Qwen3.8-Max license.
  • Qwen3.8-Max Alibaba (Qwen) · 2 August 2026
    Alibaba's largest model has 2.4T parameters (95B active) and 1M context, and is positioned for coding and 'cowork'. Open weights followed the next week.
  • Claude Opus 5 Anthropic · 24 July 2026
    Claude Opus 5 comes close to Fable 5 at half the price ($5/$25) and sets state of the art on Frontier-Bench and GDPval-AA.
  • Hugging Face incident: OpenAI models escape a cyber-eval sandbox OpenAI · 21 July 2026
    OpenAI discloses that GPT-5.6 Sol and a pre-release model, in a cyber eval with reduced refusals, escaped their sandbox and breached Hugging Face.
  • Kimi K3 Moonshot AI · 16 July 2026
    2.8T-parameter open-weights MoE (104B active, 1M context) on Kimi Delta Attention and Attention Residuals, reported third on Artificial Analysis behind two closed models at launch.
  • GPT-5.6 (Sol, Terra, Luna) OpenAI · 9 July 2026
    GPT-5.6 splits into Sol, Terra and Luna tiers, with Sol scoring 53.6 on Agents' Last Exam and 92.2% on BrowseComp at lower token cost.
  • Hy3 Tencent · 6 July 2026
    Completed Hy3: same 295B/21B MoE, now Apache-2.0, API input at 1 yuan per million tokens; scored 2.67 vs GLM-5.1's 2.51 in a 270-expert blind test.
  • LongCat-2.0 Meituan (LongCat) · 29 June 2026
    1.6T-total MoE with 1M context, trained on 35T+ tokens entirely on Chinese AI accelerators; 59.5 on SWE-bench Pro, weights under MIT.
  • SpaceX agrees to buy Cursor for $60B SpaceX / Anysphere (Cursor) · 16 June 2026
    SpaceX exercises its option and signs an all-stock definitive agreement to acquire Anysphere for $60B, the largest startup acquisition on record.
  • GLM-5.2 Zhipu AI / Z.ai · 13 June 2026
    Z.ai's flagship GLM with, for the first time, a solid 1M-token context; 62.1 on SWE-Bench Pro and 40.5 on HLE, MIT-licensed, weights following three days after subscriber launch.
  • Claude Fable 5 Anthropic · 9 June 2026
    Claude Fable 5 is the first public Mythos-class model, priced at $10/$50, with classifiers that route cyber, bio/chem and distillation queries to Opus 4.8.
  • Claude Mythos 5 Anthropic · 9 June 2026
    Claude Mythos 5 is Fable 5 without the cyber safeguards, limited to Project Glasswing partners and later vetted biology researchers, at $10/$50.
  • MiniMax M3 MiniMax · 1 June 2026
    Natively multimodal ~428B-total (~23B active) model with MiniMax Sparse Attention for 1M context at about 1/20 the per-token cost of M2; 80.5% SWE-bench Verified.
  • Project Glasswing: initial update Anthropic · 22 May 2026
    Glasswing partners using Mythos Preview found over 10,000 high or critical vulnerabilities; the bottleneck is now verifying, disclosing and patching them.
  • Gemini 3.5 Flash Google DeepMind · 19 May 2026
    Gemini 3.5 Flash, launched at I/O 2026, beats 3.1 Pro on agentic benchmarks, with 76.2% on Terminal-Bench 2.1, 1656 Elo on GDPval-AA and 83.6% on MCP Atlas.
  • DeepSeek-V4-Pro and V4-Flash (preview) DeepSeek · 24 April 2026
    1.6T-parameter MoE (49B active) plus 284B Flash, 1M-token context; at 1M tokens uses 27% of V3.2's FLOPs and 10% of its KV cache.
  • GPT-5.5 and GPT-5.5 Pro OpenAI · 23 April 2026
    GPT-5.5 reaches 82.7% on Terminal-Bench 2.0 and 78.7% on OSWorld-Verified; the API followed a day later with a 1M-token window.
  • MiMo-V2.5 and V2.5-Pro Xiaomi (MiMo) · 22 April 2026
    Xiaomi opened a 1.02T-total (42B active) Pro model and a 310B/15B model under MIT, with 1M context.
  • SpaceX-Cursor partnership and $60B option SpaceX / Anysphere (Cursor) · 21 April 2026
    SpaceX announces a Cursor partnership with an option to buy it for $60B later in 2026, or pay $10B for the joint work.
  • Claude Opus 4.7 Anthropic · 16 April 2026
    Claude Opus 4.7 raises SWE-bench Pro to 64.3% and accepts images over 3x larger in pixels (2,576 px), while deliberately limiting cyber capability.
  • Claude Mythos Preview Anthropic · 7 April 2026
    Claude Mythos Preview, a tier above Opus, out-finds all but the most skilled humans at software vulnerabilities, so Anthropic gates it to about 50 organizations.
  • Project Glasswing Anthropic · 7 April 2026
    Project Glasswing gives 12 launch partners and 40+ organizations Mythos Preview, with $100M in credits, to find and fix flaws in critical software.
  • GLM-5.1 Zhipu AI / Z.ai · 7 April 2026
    Post-trained GLM-5 that tops SWE-Bench Pro at 58.4 and can work autonomously on one task for up to eight hours.
  • Cursor 3 Anysphere (Cursor) · 2 April 2026
    Cursor 3 rebuilds the interface around an Agents Window that runs parallel local and cloud agents across repos, with local-to-cloud handoff.
  • Composer 2 Anysphere (Cursor) · 19 March 2026
    Cursor Composer 2: continued pretraining plus long-horizon RL, 61.7 on Terminal-Bench 2.0, priced at $0.50/$2.50 per million tokens.
  • GPT-5.4 and GPT-5.4 Pro OpenAI · 5 March 2026
    GPT-5.4 is OpenAI's first general-purpose model with native computer use, scoring 75.0% on OSWorld-Verified, with a 1M-token context.
  • Gemini 3.1 Pro Google DeepMind · 19 February 2026
    Gemini 3.1 Pro scored a verified 77.1% on ARC-AGI-2, more than double Gemini 3 Pro, with 80.6% on SWE-bench Verified and 94.3% on GPQA Diamond.
  • Qwen3.5-397B-A17B and Qwen3.5-Plus Alibaba (Qwen) · 16 February 2026
    Open 397B-A17B native vision-language MoE with Gated DeltaNet linear attention, 201 languages and 262K context; hosted Qwen3.5-Plus offers 1M.
  • Seed 2.0 (Pro, Lite, Mini, Code) ByteDance Seed · 14 February 2026
    Flagship Doubao generation in Pro, Lite, Mini and Code models; Pro claims IMO, CMO and ICPC gold results and token prices about ten times lower.
  • Gemini 3 Deep Think upgrade (Feb 2026) Google · 12 February 2026
    Upgraded Deep Think, built on Gemini 3.1 Pro, reports 84.6% on ARC-AGI-2 (ARC Prize verified), 48.4% on Humanity's Last Exam and a 3455 Codeforces Elo.
  • GLM-5 Zhipu AI / Z.ai · 11 February 2026
    744B-total (40B active) MIT-licensed MoE with DeepSeek Sparse Attention, trained on 28.5T tokens; 77.8% SWE-bench Verified and top open model on Artificial Analysis at launch.
  • Claude Opus 4.6 Anthropic · 5 February 2026
    Claude Opus 4.6 adds a 1M-token context (beta), 128K output, adaptive thinking and Claude Code agent teams at unchanged $5/$25 pricing.
  • GPT-5.3-Codex OpenAI · 5 February 2026
    GPT-5.3-Codex is OpenAI's first model "instrumental in creating itself", as early versions helped debug its own training and manage its deployment.
  • Kimi K2.5 Moonshot AI · 27 January 2026
    Natively multimodal 1T/32B open model trained on about 15T mixed vision-text tokens, with Agent Swarm orchestrating up to 100 parallel sub-agents.
  • Gemini 3 Flash Google DeepMind · 17 December 2025
    Gemini 3 Flash has Pro-grade reasoning at $0.50 / $3 per million tokens. It scores 78% on SWE-bench Verified, above 3 Pro, and is 3x faster than 2.5 Pro.
  • GPT-5.2 OpenAI · 11 December 2025
    GPT-5.2 targets professional knowledge work, reaching 70.9% wins or ties vs experts on GDPval and 52.9% on ARC-AGI-2.
  • DeepSeek-V3.2 and V3.2-Speciale DeepSeek · 1 December 2025
    Production DSA model at claimed GPT-5 level; Speciale variant claims gold at IMO, CMO, ICPC World Finals and IOI 2025. First thinking-in-tool-use release.
  • Claude Opus 4.5 Anthropic · 24 November 2025
    Claude Opus 4.5 cuts Opus pricing by two-thirds to $5/$25 and adds an effort parameter; Anthropic says it beat every human on its engineering take-home.
  • Gemini 3 Pro Google DeepMind · 18 November 2025
    Gemini 3 Pro scored 1501 Elo on LMArena, 37.5% on Humanity's Last Exam, 91.9% on GPQA Diamond and 76.2% on SWE-bench Verified, and shipped in Search on day one.
  • Claude Code Anthropic · 24 February 2025
    Claude Code launches as a terminal-based agentic coding tool in research preview, delegating multi-step engineering tasks from the command line.
  • DeepSeek-R1 and R1-Zero DeepSeek · 20 January 2025
    Open-weights 671B MoE reasoning model claimed at OpenAI o1 level; R1-Zero showed reasoning emerging from pure RL with rule-based rewards.
  • DeepSeek-V3 DeepSeek · 26 December 2024
    671B MoE (37B active) trained on 14.8T tokens in 2.788M H800 GPU hours; open weights matching leading closed models at far lower reported cost.
  • Gemini 1.0 (Ultra, Pro, Nano) Google DeepMind · 6 December 2023
    First Gemini family, natively multimodal, with Ultra, Pro and Nano models; Ultra reported 90.0% on MMLU with CoT@32, beating GPT-4's reported score.

Most active labs