Go Generator
Commercial use OK
380+ models
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No sign-up needed
Model:
+ GPT-5, Claude, Gemini
Describe what you need and get idiomatic Go 1.22+ — generics, errors.Is / errors.As wrapping, goroutines + channels, context-based cancellation, and gofmt-clean formatting. Self-hosted Qwen 3 Coder is free under the daily pool; premium Claude Sonnet / GPT-5 handle multi-package refactors and complex concurrency better.
Explanation
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Result
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Generate Go/Golang code with free AI. Concurrent and efficient programs.
How to Use Go Generator
1
Enter your input
Type text, upload a file, or describe what you want. No account needed.
2
Click generate
Our AI processes your request in seconds using the best open-source models.
3
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Download, copy, or share your result. Free for personal and commercial use.
Use this tool via API
Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.
curl -X POST https://api.free.ai/v1/chat/ \
-H "Authorization: Bearer sk-free-..." \
-H "Content-Type: application/json" \
-d '{"model": "qwen-coder", "messages": [{"role": "user", "content": "Write a Python function that reverses a string."}]}'Go Generator — FAQ
Idiomatic, gofmt-clean Go 1.22+ code that compiles as-is and passes `go vet`. Outputs include full package declarations, correct imports with module paths, error wrapping with fmt.Errorf/%w, context-based cancellation, and structured logging via log/slog. 8 style presets (Production / HTTP server / gRPC / CLI / Concurrent goroutines / Worker pool / Minimal main.go / testify tests). Supports all Go versions from 1.17 (pre-generics) to 1.22 (range over func iterators).
Yes — a typical HTTP handler or worker-pool example costs ~1,500 tokens on the default Qwen 3 Coder model, well inside the 2,500 anonymous or 10,000 signed-up daily pool. Premium Claude Sonnet / GPT-5 available per-call for complex multi-package answers. No sign-up required to test drive.
Copilot ($10-19/mo) is an IDE autocomplete, tightly integrated with your real code. Cursor ($20/mo) is a full VS Code fork. Cody (Sourcegraph, $9-19/mo) pulls context from your repo. Our tool is a web-based one-shot generator — no install, no repo context, just describe → get production-ready code. Pairs well with Copilot: we write the scaffolding, Copilot fills in the loops.
Yes — errors wrap with fmt.Errorf("...: %w", err) so consumers can errors.Is / errors.As them. Sentinel errors are declared as package vars (var ErrNotFound = errors.New("not found")). Never uses `panic` for recoverable paths. Toggle this off if you want explicit returns without wrapping.
Yes — the Concurrent and Worker-pool style presets include explicit sync.WaitGroup, errgroup.Group, context-based cancellation, and proper channel lifecycle (sender closes, receiver ranges). Every `go f()` has a clear exit condition. For heavy reviews of existing concurrent code use /code/review/ with the "performance" focus.
Yes — pick Go 1.22 and the model uses the new `for range 10 { ... }` integer form and range-over-func iterators where sensible. For generics (added 1.18) the model writes them liberally — generic LRU caches, slice utilities, type-safe collections. Downgrade if your deployment target is older.
Yes — the HTTP-server style preset emits a pattern with http.Server{}.Shutdown(ctx) on SIGINT/SIGTERM, 30-second shutdown timeout, draining in-flight requests. Middleware chain includes logging + recovery + CORS. Uses chi router by default, or stdlib net/http with ServeMux if you prefer zero deps.
Pick the gRPC style preset. Output includes proto service registration, unary and streaming handlers, context-based cancellation, and grpc.WithTransportCredentials(insecure.NewCredentials()) for development. Server uses reflection API so you can test with grpcurl. You must generate the proto stubs with protoc-gen-go / protoc-gen-go-grpc yourself — we name the `go generate` directive.
Yes — the testify style preset uses github.com/stretchr/testify/assert and require for readable assertions. Table-driven tests with tt := []struct{} pattern, subtests via t.Run(name, func). For deeper struct comparison it suggests google/go-cmp with the right cmpopts.
Yes — switch to the "Paste starter / stub" tab. The model preserves your parameter names, return types, and package declaration; it only fills in the body plus any necessary helpers.
Review every output before deploying, same as any pull request. The code is usually correct and idiomatic, but the model does not have your runtime constraints, security model, or full repo context. For security-sensitive code run /code/review/ with security focus on the output.
Yes — POST to /v1/chat/ with the same system prompt this page builds. Good for CI-based code-generation tools or IDE plugins. Bearer auth, rate-limited. Docs at /api/.
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