MiniMax releases M2.7: 56.22% SWE-Pro, 200K context, and self-evolving agent loops

• MiniMax released M2.7 on its own API and agent stack, pitching it as a coding- and workflow-focused reasoning model with a 200K-class context window, first-party access, and broad tool support through partner surfaces like OpenRouter and Ollama Cloud launch thread OpenRouter launch Ollama launch.
• MiniMax’s headline claims are close to frontier proprietary coding models on several agent benchmarks: 56.22% on SWE-Pro, 52.7 on Multi-SWE Bench, 55.6 on VIBE-Pro, and 66.6% on MLE-Bench Lite, with an “88% win-rate vs M2.5” in the company’s internal comparison launch thread benchmark summary.
• The unusual part is the training story: MiniMax says M2.7 “deeply participated in its own evolution,” using an agent harness with short-term memory, self-feedback, and self-optimization loops, plus recursive harness updates during internal iteration self-evolving thread harness details.
• Independent signals are strong but mixed. Artificial Analysis said M2.7 reached an index score of 50 with “less than one third” of GLM-5’s cost and a much lower hallucination rate, while BridgeBench reported M2.7 ranking below M2.5 on real-world vibe-coding evals AA results BridgeBench post.

MiniMax is positioning M2.7 as a production model for software work, agent teams, and office-style workflows. In its own launch thread, the company claims “SOTA performance in SWE-Pro (56.22%) and Terminal Bench 2 (57.0%),” says the model hit “97% skill adherence across 40+ complex skills,” and says it can edit Office files across multi-turn sessions launch thread. A broader benchmark summary from the launch ecosystem puts M2.7 at 56.2 on SWE-Pro, 52.7 on Multi-SWE Bench, 55.6 on VIBE-Pro, 46.3 on Toolathlon, 62.7 on MM-ClawBench, and 50 on the Artificial Analysis index benchmark summary.

The access story is unusually broad on day one. MiniMax’s quickstart post points developers to a quickstart that uses the Anthropic SDK and documents integrations with Claude Code, Cursor, Cline, Roo Code, Codex CLI, and MCP-style tooling via Quick Start docs. Outside MiniMax’s own platform, OpenRouter says the model is live now OpenRouter launch, Ollama added a cloud-hosted variant with direct commands for Claude Code and OpenClaw Ollama launch, and Vercel exposed both a standard model and a “high-speed” variant that it says reaches about 100 tokens per second Vercel AI Gateway.

MiniMax’s pricing is aggressive for a model making frontier-adjacent coding claims. Artificial Analysis says the model keeps M2.5 pricing at $0.30 per million input tokens and $1.20 per million output tokens with a 200K context window AA results, and OpenRouter listings show a 204,800-token context window at the same rates OpenRouter pricing.

MiniMax’s core differentiator is not just benchmark position but the claim that M2.7 helped build the system around itself. The company says it ran 22 OpenAI open-sourced MLE-Bench Lite competitions on a single A30-class setup, with an agent harness built around “short-term memory, self-feedback, and self-optimization” self-evolving thread. After each round, the agent writes a memory file, critiques its own results, and uses that chain to guide the next iteration. Across three 24-hour runs, MiniMax says the best run earned 9 golds, 5 silvers, and 1 bronze, for a 66.6% average medal rate self-evolving thread.

The more operational claim is that the harness also evolved. MiniMax says its internal setup “autonomously collects feedback, builds evaluation sets,” and iterates on “architecture, skills/MCP implementation, and memory mechanisms” harness details. The system diagram shows humans still setting goals, guardrails, and escalation boundaries, while the agent reads docs and logs, chains skills, generates reports, and escalates for approval rather than running fully unsupervised [img:3|iteration system].

Third-party measurements support part of the launch story, especially on cost-adjusted performance. Artificial Analysis says M2.7 gained 8 points over M2.5 to reach 50 on its intelligence index, tied GLM-5 at that level, and did so at roughly $176 to run the suite versus $547 for GLM-5 AA results. It also reports a GDPval-AA Elo around 1494-1495 and says the jump was driven partly by “reduced hallucinations,” with M2.7 improving to a 34% hallucination rate and an AA-Omniscience score of +1 from -40 on M2.5 AA results AA breakdown. Vals also published a dashboard showing 60.14% on its aggregate index, 72.4% on SWE-bench, and 47.19% on Terminal-Bench 2.0, though with very uneven performance across domains like ProofBench and MedCode Vals dashboard.

But the early read is not uniformly bullish. BridgeBench says M2.7 fell from M2.5’s rank 12 to rank 19 on its vibe-coding benchmark, with drops in UI, refactor, and generation subtasks, despite M2.7’s much stronger showing on synthetic or semi-synthetic coding leaderboards BridgeBench post. That gap matters because MiniMax is marketing M2.7 for “online incidents,” tool use, and multi-step agent work, and those are exactly the cases where benchmark wins need confirmation in real repos and long-running workflows launch thread.