// HACKER NEWS — CYBERSECURITY
Cognition's SWE-2 achieves 92.8 on Terminal-Bench 2.1
2.8T total params, 104B active per token (MoE) - the Kimi K3 base with Cognition’s post-training on top, and the first time Cognition has scaled RL into the multi-trillion-parameter regime. The base had already been RL-heavy for agentic coding; Cognition’s pass added another 5 to 6 points on most benchmarks.
Benchmarks (Cognition self-reported): FrontierCode 1.1 Main 50.0, DeepSWE 1.1 73.0, Terminal-Bench 2.1 92.8, Terminal-Bench 4.0 27.3. The headline: 50.0 on FrontierCode is one point behind Claude Fable 5.1 (50.9) and 3.3 behind GPT-6 Astra (53.3) - at a claimed 64% lower cost than Fable 5.1 and a quarter of Astra’s. Terminal-Bench 2.1 is the highest number in the published table. The soft spot is Terminal-Bench 4.0, where SWE-2’s 27.3 trails Fable 5.1 (55.8) and GPT-6 Astra (57.9) by a wide margin - long-horizon agentic work is where the gap to the frontier still lives.
Proprietary weights, no local run. Cognition has not published SWE-2 weights, so there is nothing to download and no quant ladder to wait for. It is available today in Devin Desktop and CLI, with rollout on Devin Web and Fusion. Cognition publishes no per-token API for SWE-2, so the cost-per-task comparisons (64% cheaper than Fable 5.1 at FrontierCode parity) are the pricing surface, not a $/1M rate card. Every figure here is Cognition’s own number, pending independent replication.
Launch post: SWE-2, post-trained from Kimi K3 - FrontierCode 1.1 Main 50.0, Terminal-Bench 2.1 92.8
View on X →
Vendor-reported - from the developer's own model card / tech report
Vendor-reported - from the developer's own model card / tech report
No per-token API provider pricing tracked for SWE-2 yet.
For flagship list prices, see the
calculator.
Data accumulates from the first daily sync - longer ranges populate over time. Prices come from OpenRouter snapshots, not a historical API.