
Blaine Kasten engineered robust API infrastructure and developer tooling in the togethercomputer/openapi repository, focusing on scalable backend systems and clear API contracts. Over ten months, Blaine delivered features such as standardized OpenAPI schemas for chat, audio, and video endpoints, GPU cluster management, and reinforcement learning APIs, using Python, TypeScript, and YAML. His approach emphasized maintainability through schema normalization, reusable components, and comprehensive documentation. Blaine also improved CI/CD pipelines and SDK integration, reducing onboarding risk and ensuring reliable deployments. The depth of his work is reflected in thoughtful schema design, cross-language code samples, and iterative enhancements that strengthened API usability and reliability.
April 2026: Delivered GPU-oriented Cluster API enhancements and API spec improvements in togethercomputer/openapi, consolidating changes across cluster endpoints and correcting driver version field naming. This work enhances GPU workload provisioning, improves API consistency, and reduces integration risk.
April 2026: Delivered GPU-oriented Cluster API enhancements and API spec improvements in togethercomputer/openapi, consolidating changes across cluster endpoints and correcting driver version field naming. This work enhances GPU workload provisioning, improves API consistency, and reduces integration risk.
March 2026: OpenAPI improvements and documentation modernization for completion responses. Implemented typing for completion responses including log probabilities, added schemas for logprobs, updated OpenAPI spec with detailed descriptions and references, and replaced deprecated meta-llama model references with deepseek-ai models across examples. No major bugs fixed this month; focus was on feature delivery and documentation quality to improve developer experience and integration reliability.
March 2026: OpenAPI improvements and documentation modernization for completion responses. Implemented typing for completion responses including log probabilities, added schemas for logprobs, updated OpenAPI spec with detailed descriptions and references, and replaced deprecated meta-llama model references with deepseek-ai models across examples. No major bugs fixed this month; focus was on feature delivery and documentation quality to improve developer experience and integration reliability.
February 2026 focused on strengthening API surfaces for RL experimentation, hardening OpenAPI documentation, and improving deployment/testing tooling, while guiding users through SDK migration. The work enabled faster, safer RL iteration, safer cluster provisioning, and more deterministic tests across two repositories.
February 2026 focused on strengthening API surfaces for RL experimentation, hardening OpenAPI documentation, and improving deployment/testing tooling, while guiding users through SDK migration. The work enabled faster, safer RL iteration, safer cluster provisioning, and more deterministic tests across two repositories.
January 2026 monthly summary focusing on business value and technical achievements across repositories. Delivered core features to support secure, scalable integrations and improved developer experience, with targeted fixes to increase API stability.
January 2026 monthly summary focusing on business value and technical achievements across repositories. Delivered core features to support secure, scalable integrations and improved developer experience, with targeted fixes to increase API stability.
December 2025: OpenAPI repository focused on delivering business value through API usability enhancements, data consistency fixes, structured outputs improvements, and CI/CD reliability gains. Key business value delivered includes easier discovery of dedicated models via a new filter parameter, standardized date-time fields for Finetune responses, clearer structured outputs for chat completions, and faster, more reliable SDK builds and PR workflows.
December 2025: OpenAPI repository focused on delivering business value through API usability enhancements, data consistency fixes, structured outputs improvements, and CI/CD reliability gains. Key business value delivered includes easier discovery of dedicated models via a new filter parameter, standardized date-time fields for Finetune responses, clearer structured outputs for chat completions, and faster, more reliable SDK builds and PR workflows.
November 2025 delivered API reliability, developer-experience improvements, and strengthened quality gates across two repos (togethercomputer/openapi and togethercomputer/together-python). Highlights include: (1) OpenAPI Branch Preview Builds added to accelerate testing and reviews; (2) PR metadata synchronization to align base_sha, head_sha, and base_ref for deterministic PR state; (3) Availability Zones API introduced with improved response shape, plus Endpoint create method now supports availability_zone and Batch API to cancel batch processing; and Video Creation now returns the full video job; (4) extensive OpenAPI/Python SDK alignment and fixes, including YAML/code-sample updates and Python v2 adjustments; (5) test scaffolding and CI validation established to speed up feedback and reduce release-risk.
November 2025 delivered API reliability, developer-experience improvements, and strengthened quality gates across two repos (togethercomputer/openapi and togethercomputer/together-python). Highlights include: (1) OpenAPI Branch Preview Builds added to accelerate testing and reviews; (2) PR metadata synchronization to align base_sha, head_sha, and base_ref for deterministic PR state; (3) Availability Zones API introduced with improved response shape, plus Endpoint create method now supports availability_zone and Batch API to cancel batch processing; and Video Creation now returns the full video job; (4) extensive OpenAPI/Python SDK alignment and fixes, including YAML/code-sample updates and Python v2 adjustments; (5) test scaffolding and CI validation established to speed up feedback and reduce release-risk.
October 2025 monthly summary: Key API and SDK updates aimed at accelerating client integrations and reducing onboarding risk. Delivered Video API expansion with new creation and status endpoints, ID-based retrieval, and schema normalizations (including required id and optional frame handling). Stabilized the OpenAPI spec through YAML fixes and cross-cutting schema updates. Enhanced developer experience via Python SDK examples and OpenAPI samples for Python/TypeScript/JavaScript, and added metadata support for ChatCompletionToolMessageParam.
October 2025 monthly summary: Key API and SDK updates aimed at accelerating client integrations and reducing onboarding risk. Delivered Video API expansion with new creation and status endpoints, ID-based retrieval, and schema normalizations (including required id and optional frame handling). Stabilized the OpenAPI spec through YAML fixes and cross-cutting schema updates. Enhanced developer experience via Python SDK examples and OpenAPI samples for Python/TypeScript/JavaScript, and added metadata support for ChatCompletionToolMessageParam.
OpenAPI schema enhancement in July 2025: Introduced a top-level InferenceWarning type in the togethercomputer/openapi schema to enable reusable references for warnings across response objects. Updated client code examples (Python, TypeScript, JavaScript) to reflect the new schema with a more direct variable assignment for the model list. This improves consistency, maintainability, and client integration.
OpenAPI schema enhancement in July 2025: Introduced a top-level InferenceWarning type in the togethercomputer/openapi schema to enable reusable references for warnings across response objects. Updated client code examples (Python, TypeScript, JavaScript) to reflect the new schema with a more direct variable assignment for the model list. This improves consistency, maintainability, and client integration.
June 2025 monthly summary for togethercomputer/openapi focusing on feature delivery for audio input modalities in OpenAPI, enabling audio URLs and base64-encoded audio data, with a forward-looking approach for multimedia features and future expansions. No major bugs fixed this month.
June 2025 monthly summary for togethercomputer/openapi focusing on feature delivery for audio input modalities in OpenAPI, enabling audio URLs and base64-encoded audio data, with a forward-looking approach for multimedia features and future expansions. No major bugs fixed this month.
May 2025 performance summary: Focused OpenAPI refactor in togethercomputer/openapi to standardize chat completion messages. Replaced inline message definitions with a reference to ChatCompletionMessageParam, establishing a single source of truth for chat message structure. This improves client clarity, validation reliability, and API maintainability. No major bugs reported this month. Impact includes reduced integration risk, simplified future evolutions of chat endpoints, and stronger API contract governance. Key skills demonstrated include OpenAPI schema design, refactoring for consistency, and disciplined version-controlled changes.
May 2025 performance summary: Focused OpenAPI refactor in togethercomputer/openapi to standardize chat completion messages. Replaced inline message definitions with a reference to ChatCompletionMessageParam, establishing a single source of truth for chat message structure. This improves client clarity, validation reliability, and API maintainability. No major bugs reported this month. Impact includes reduced integration risk, simplified future evolutions of chat endpoints, and stronger API contract governance. Key skills demonstrated include OpenAPI schema design, refactoring for consistency, and disciplined version-controlled changes.

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