Last updated 08-15-2026
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Cosine
Cosine ships the Lumen family of coding models and a developer workspace for teams that want AI close to their repos. You can start in a terminal-native flow with MCP tool access and multi-agent orchestration, or run parallel cloud tasks when PMs and engineers need a shared project view.
General chat models spread training across poetry and trivia; Cosine bets the opposite with Lumen models post-trained on production code from real engineering teams. Lumen Outpost scored 59.3% on Niche-Bench in Cosine's published comparisons, ahead of GPT-5.4 at 42.4%, and the lineup adds Scout for cheap codebase mapping plus a forthcoming Sovereign tier for controlled environments.
Developer teams, platform engineers, and regulated orgs use Cosine when they need deployment choice from public cloud to managed single-tenant or fully air-gapped installs. Pricing starts at $19 per month for 4M credits on the Starter plan, with Team and Enterprise tiers scaling credits and lowering per-million add-on rates.
Lumen Outpost scored 59.3% on Niche-Bench in Cosine's published benchmark table
Starter plan includes 4M credits per month starting at $19 with $6.50 per 1M add-on credits
Lumen Scout post-trained from Devstral 123B for low-cost codebase mapping tasks
Terminal-native workflow supports MCP tool access and multi-agent orchestration
Deployment options span public cloud, managed single-tenant, and fully air-gapped installs
Post-training targets enterprise languages including COBOL, Fortran, Verilog, Rust, and complex SQL
Lumen Outpost leads Cosine's published Niche-Bench comparison at 59.3%
Credit-based plans scale from $19 Starter to $999 Enterprise with volume discounts
Deployment flexibility covers public cloud, single-tenant, and air-gapped options
Specialist training focuses on production code and legacy enterprise languages
Terminal and cloud workflows support multi-agent orchestration with MCP tools
Lumen Sovereign tier is listed as coming soon, not generally available
Credit usage varies with model choice and runtime, so bills need monitoring
Enterprise and private deployments require sales conversations for custom scoping
What are Cosine credits?
Cosine credits measure usage across agent work, model calls, and cloud execution on Cosine. The pricing page notes that actual consumption depends on task size, model choice, and runtime.
How much does Cosine Starter cost?
Cosine's Starter plan starts at $19 per month and includes 4M credits each month. Add-on credits cost $6.50 per 1M credits when you exceed the monthly allotment.
What is Lumen Outpost?
Lumen Outpost is Cosine's production coding model post-trained from Kimi K2.6 for complex codebases and legacy languages. Cosine publishes a 59.3% Niche-Bench score for Outpost in its benchmark comparisons.
What is Lumen Scout used for?
Lumen Scout is Cosine's utility model post-trained from Devstral 123B for retrieval, indexing, and codebase mapping. Cosine positions Scout for fast, low-cost intelligence at scale.
Can Cosine run air-gapped?
Cosine offers a fully air-gapped deployment for organizations that need the platform inside their own security perimeter. The homepage also lists managed single-tenant cloud for enterprise controls.
What happens when Cosine credits run out?
Cosine lets every paid tier buy top-up credits at any time. Add-on pricing drops on higher plans, from $6.50 per 1M on Starter to $4.50 per 1M on Enterprise.