diff --git a/cmd/eval/README.md b/cmd/eval/README.md
new file mode 100644
index 000000000..25be8c274
--- /dev/null
+++ b/cmd/eval/README.md
@@ -0,0 +1,50 @@
+# eval
+
+Evaluation tool for testing Ollama models.
+
+## Usage
+
+Run all tests:
+
+```bash
+go run . -model llama3.2:latest
+```
+
+Run specific suite:
+
+```bash
+go run . -model llama3.2:latest -suite tool-calling-basic -v
+```
+
+List available suites:
+
+```bash
+go run . -list
+```
+
+## Adding Tests
+
+Edit `suites.go` to add new test suites. Each test needs:
+
+- `Name`: test identifier
+- `Prompt`: what to send to the model
+- `Check`: function to validate the response
+
+Example:
+
+```go
+{
+    Name:   "my-test",
+    Prompt: "What is 2+2?",
+    Check:  Contains("4"),
+}
+```
+
+Available check functions:
+
+- `HasResponse()` - response is non-empty
+- `Contains(s)` - response contains substring
+- `CallsTool(name)` - model called specific tool
+- `NoTools()` - model called no tools
+- `MinTools(n)` - model called at least n tools
+- `All(checks...)` - all checks pass
diff --git a/cmd/eval/eval.go b/cmd/eval/eval.go
new file mode 100644
index 000000000..9eb3e20be
--- /dev/null
+++ b/cmd/eval/eval.go
@@ -0,0 +1,151 @@
+package main
+
+import (
+	"context"
+	"strings"
+	"time"
+
+	"github.com/ollama/ollama/api"
+)
+
+// Test is a single evaluation test
+type Test struct {
+	Name    string
+	Prompt  string
+	System  string
+	Tools   []api.Tool
+	Think   bool
+	Options map[string]any
+	Check   func(response string, tools []api.ToolCall) bool
+}
+
+// Suite is a collection of tests
+type Suite struct {
+	Name  string
+	Tests []Test
+}
+
+// Result holds test execution results
+type Result struct {
+	Name      string
+	Passed    bool
+	Error     error
+	Duration  time.Duration
+	Response  string
+	Tools     []string
+	ToolCalls []api.ToolCall
+	Thinking  bool
+}
+
+// Run executes a test against a model
+func Run(ctx context.Context, client *api.Client, model string, test Test) Result {
+	result := Result{Name: test.Name}
+
+	req := &api.ChatRequest{
+		Model: model,
+		Messages: []api.Message{
+			{Role: "user", Content: test.Prompt},
+		},
+		Options: test.Options,
+	}
+
+	if test.System != "" {
+		req.Messages = append([]api.Message{
+			{Role: "system", Content: test.System},
+		}, req.Messages...)
+	}
+
+	if len(test.Tools) > 0 {
+		req.Tools = test.Tools
+	}
+
+	if test.Think {
+		req.Think = &api.ThinkValue{Value: true}
+	}
+
+	var resp strings.Builder
+	var toolCalls []api.ToolCall
+
+	start := time.Now()
+	err := client.Chat(ctx, req, func(r api.ChatResponse) error {
+		resp.WriteString(r.Message.Content)
+		if r.Message.Thinking != "" {
+			result.Thinking = true
+		}
+		toolCalls = append(toolCalls, r.Message.ToolCalls...)
+		return nil
+	})
+	result.Duration = time.Since(start)
+
+	if err != nil {
+		result.Error = err
+		return result
+	}
+
+	result.Response = resp.String()
+	result.Tools = uniqueToolNames(toolCalls)
+	result.ToolCalls = toolCalls
+	result.Passed = test.Check(result.Response, toolCalls)
+
+	return result
+}
+
+func uniqueToolNames(calls []api.ToolCall) []string {
+	seen := make(map[string]bool)
+	var names []string
+	for _, c := range calls {
+		if !seen[c.Function.Name] {
+			seen[c.Function.Name] = true
+			names = append(names, c.Function.Name)
+		}
+	}
+	return names
+}
+
+// Check functions for common test patterns
+
+func HasResponse() func(string, []api.ToolCall) bool {
+	return func(resp string, _ []api.ToolCall) bool {
+		return strings.TrimSpace(resp) != ""
+	}
+}
+
+func Contains(s string) func(string, []api.ToolCall) bool {
+	return func(resp string, _ []api.ToolCall) bool {
+		return strings.Contains(strings.ToLower(resp), strings.ToLower(s))
+	}
+}
+
+func CallsTool(name string) func(string, []api.ToolCall) bool {
+	return func(_ string, tools []api.ToolCall) bool {
+		for _, t := range tools {
+			if t.Function.Name == name {
+				return true
+			}
+		}
+		return false
+	}
+}
+
+func NoTools() func(string, []api.ToolCall) bool {
+	return func(_ string, tools []api.ToolCall) bool {
+		return len(tools) == 0
+	}
+}
+
+func MinTools(n int) func(string, []api.ToolCall) bool {
+	return func(_ string, tools []api.ToolCall) bool {
+		return len(tools) >= n
+	}
+}
+
+func All(checks ...func(string, []api.ToolCall) bool) func(string, []api.ToolCall) bool {
+	return func(resp string, tools []api.ToolCall) bool {
+		for _, check := range checks {
+			if !check(resp, tools) {
+				return false
+			}
+		}
+		return true
+	}
+}
diff --git a/cmd/eval/main.go b/cmd/eval/main.go
new file mode 100644
index 000000000..2098023f4
--- /dev/null
+++ b/cmd/eval/main.go
@@ -0,0 +1,217 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/ollama/ollama/api"
+)
+
+func main() {
+	model := flag.String("model", "", "model to evaluate")
+	suite := flag.String("suite", "", "comma-separated list of suites to run (empty runs all)")
+	list := flag.Bool("list", false, "list available suites")
+	verbose := flag.Bool("v", false, "verbose output")
+	timeout := flag.Int("timeout", 60, "timeout per test in seconds")
+	export := flag.String("export", "eval-results.json", "export results to file")
+	flag.Parse()
+
+	if *list {
+		for _, s := range suites {
+			fmt.Printf("%s (%d tests)\n", s.Name, len(s.Tests))
+		}
+		return
+	}
+
+	if *model == "" {
+		fmt.Fprintf(os.Stderr, "error: -model parameter is required\n")
+		os.Exit(1)
+	}
+
+	client, err := api.ClientFromEnvironment()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	if err := client.Heartbeat(ctx); err != nil {
+		cancel()
+		fmt.Fprintf(os.Stderr, "error: cannot connect to ollama\n")
+		os.Exit(1)
+	}
+	cancel()
+
+	selected := suites
+	if *suite != "" {
+		suiteNames := strings.Split(*suite, ",")
+		selected = []Suite{}
+		var notFound []string
+
+		for _, name := range suiteNames {
+			name = strings.TrimSpace(name)
+			if name == "" {
+				continue
+			}
+
+			found := false
+			for _, s := range suites {
+				if s.Name == name {
+					selected = append(selected, s)
+					found = true
+					break
+				}
+			}
+			if !found {
+				notFound = append(notFound, name)
+			}
+		}
+
+		if len(notFound) > 0 {
+			fmt.Fprintf(os.Stderr, "error: suite(s) not found: %s\n", strings.Join(notFound, ", "))
+			os.Exit(1)
+		}
+	}
+
+	var results []Result
+	for _, s := range selected {
+		if *verbose {
+			fmt.Printf("\n%s (%d tests)\n", s.Name, len(s.Tests))
+		}
+		for i, test := range s.Tests {
+			if test.Options == nil {
+				test.Options = map[string]any{"temperature": 0.1}
+			}
+			if test.Check == nil {
+				test.Check = HasResponse()
+			}
+
+			if *verbose {
+				fmt.Printf("  [%d/%d] %s... ", i+1, len(s.Tests), test.Name)
+			}
+
+			ctx, cancel := context.WithTimeout(context.Background(), time.Duration(*timeout)*time.Second)
+			result := Run(ctx, client, *model, test)
+			cancel()
+
+			results = append(results, result)
+
+			if *verbose {
+				if result.Error != nil {
+					fmt.Printf("ERROR: %v\n", result.Error)
+				} else if result.Passed {
+					fmt.Printf("PASS (%.2fs)", result.Duration.Seconds())
+					if len(result.Tools) > 0 || result.Thinking {
+						fmt.Printf(" [")
+						if len(result.Tools) > 0 {
+							fmt.Printf("tools: %s", strings.Join(result.Tools, ","))
+						}
+						if result.Thinking {
+							if len(result.Tools) > 0 {
+								fmt.Printf(", ")
+							}
+							fmt.Printf("thinking")
+						}
+						fmt.Printf("]")
+					}
+					fmt.Println()
+
+					// Print tool calls with details
+					if len(result.ToolCalls) > 0 {
+						fmt.Printf("    Tool Calls:\n")
+						for _, tc := range result.ToolCalls {
+							argsJSON, _ := json.Marshal(tc.Function.Arguments)
+							fmt.Printf("      - %s: %s\n", tc.Function.Name, string(argsJSON))
+						}
+					}
+
+					// Print response if there is one
+					if result.Response != "" {
+						fmt.Printf("    Response: %s\n", result.Response)
+					}
+				} else {
+					fmt.Printf("FAIL (%.2fs)\n", result.Duration.Seconds())
+
+					// Print tool calls with details even on failure
+					if len(result.ToolCalls) > 0 {
+						fmt.Printf("    Tool Calls:\n")
+						for _, tc := range result.ToolCalls {
+							argsJSON, _ := json.Marshal(tc.Function.Arguments)
+							fmt.Printf("      - %s: %s\n", tc.Function.Name, string(argsJSON))
+						}
+					}
+
+					// Print response even on failure
+					if result.Response != "" {
+						fmt.Printf("    Response: %s\n", result.Response)
+					}
+				}
+			}
+		}
+	}
+
+	printSummary(results)
+
+	if *export != "" {
+		if err := writeJSON(*export, results); err != nil {
+			fmt.Fprintf(os.Stderr, "warning: export failed: %v\n", err)
+		} else if *verbose {
+			fmt.Printf("\nResults: %s\n", *export)
+		}
+	}
+
+	if anyFailed(results) {
+		os.Exit(1)
+	}
+}
+
+func printSummary(results []Result) {
+	var passed, failed, errors int
+	for _, r := range results {
+		if r.Error != nil {
+			errors++
+		} else if r.Passed {
+			passed++
+		} else {
+			failed++
+		}
+	}
+
+	total := len(results)
+	rate := 0.0
+	if total > 0 {
+		rate = float64(passed) / float64(total) * 100
+	}
+
+	fmt.Printf("\n%d/%d passed (%.1f%%)", passed, total, rate)
+	if errors > 0 {
+		fmt.Printf(", %d errors", errors)
+	}
+	fmt.Println()
+}
+
+func anyFailed(results []Result) bool {
+	for _, r := range results {
+		if !r.Passed || r.Error != nil {
+			return true
+		}
+	}
+	return false
+}
+
+func writeJSON(path string, results []Result) error {
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	enc := json.NewEncoder(f)
+	enc.SetIndent("", "  ")
+	return enc.Encode(results)
+}
diff --git a/cmd/eval/suites.go b/cmd/eval/suites.go
new file mode 100644
index 000000000..d92d9a4ac
--- /dev/null
+++ b/cmd/eval/suites.go
@@ -0,0 +1,178 @@
+package main
+
+import "github.com/ollama/ollama/api"
+
+var suites = []Suite{
+	{
+		Name: "basic-qa",
+		Tests: []Test{
+			{
+				Name:   "simple-math",
+				Prompt: "What is 2+2? Reply with just the number.",
+				Check:  Contains("4"),
+			},
+			{
+				Name:   "capital-city",
+				Prompt: "What is the capital of France? Reply with just the city name.",
+				Check:  Contains("Paris"),
+			},
+			{
+				Name:   "greeting",
+				Prompt: "Say hello",
+				Check:  HasResponse(),
+			},
+		},
+	},
+	{
+		Name: "reasoning",
+		Tests: []Test{
+			{
+				Name:   "logic-puzzle",
+				Prompt: "If all roses are flowers and some flowers fade quickly, can we conclude that some roses fade quickly? Answer yes or no.",
+				Check:  Contains("no"),
+			},
+			{
+				Name:   "counting",
+				Prompt: "How many letters are in the word 'HELLO'?",
+				Check:  Contains("5"),
+			},
+		},
+	},
+	{
+		Name: "instruction-following",
+		Tests: []Test{
+			{
+				Name:   "json-output",
+				Prompt: "Reply with a JSON object containing a 'status' field set to 'ok'.",
+				Check:  All(Contains("status"), Contains("ok")),
+			},
+			{
+				Name:   "system-prompt",
+				Prompt: "What is your name?",
+				System: "You are a helpful assistant named TestBot. When asked your name, always respond with 'TestBot'.",
+				Check:  Contains("TestBot"),
+			},
+		},
+	},
+	{
+		Name: "tool-calling-basic",
+		Tests: []Test{
+			{
+				Name:   "single-tool",
+				Prompt: "What's the weather like in San Francisco?",
+				Tools:  []api.Tool{weatherTool},
+				Check:  CallsTool("get_weather"),
+			},
+			{
+				Name:   "tool-selection",
+				Prompt: "What time is it in Tokyo?",
+				Tools:  []api.Tool{weatherTool, timeTool},
+				Check:  CallsTool("get_time"),
+			},
+			{
+				Name:   "no-tool-needed",
+				Prompt: "What is 2+2?",
+				Tools:  []api.Tool{weatherTool, timeTool},
+				Check:  NoTools(),
+			},
+		},
+	},
+	{
+		Name: "tool-calling-advanced",
+		Tests: []Test{
+			{
+				Name:   "parallel-calls",
+				Prompt: "Get the weather in both New York and Los Angeles.",
+				Tools:  []api.Tool{weatherTool},
+				Check:  All(CallsTool("get_weather"), MinTools(2)),
+			},
+			{
+				Name:   "multi-param",
+				Prompt: "Search for Italian restaurants with prices between $20 and $40.",
+				Tools:  []api.Tool{restaurantTool},
+				Check:  CallsTool("search_restaurants"),
+			},
+		},
+	},
+	{
+		Name: "tool-calling-thinking",
+		Tests: []Test{
+			{
+				Name:   "thinking-before-tool",
+				Prompt: "I need to know the weather in Paris before I decide what to pack.",
+				Tools:  []api.Tool{weatherTool},
+				Think:  true,
+				Check:  CallsTool("get_weather"),
+			},
+			{
+				Name:   "thinking-multi-tool",
+				Prompt: "I'm planning a trip to London. I need to know what time it is there and what the weather is like.",
+				Tools:  []api.Tool{weatherTool, timeTool},
+				Think:  true,
+				Check:  MinTools(1),
+			},
+		},
+	},
+}
+
+var weatherTool = api.Tool{
+	Type: "function",
+	Function: api.ToolFunction{
+		Name:        "get_weather",
+		Description: "Get the current weather in a given location",
+		Parameters: api.ToolFunctionParameters{
+			Type:     "object",
+			Required: []string{"location"},
+			Properties: map[string]api.ToolProperty{
+				"location": {
+					Type:        api.PropertyType{"string"},
+					Description: "The city and state",
+				},
+			},
+		},
+	},
+}
+
+var timeTool = api.Tool{
+	Type: "function",
+	Function: api.ToolFunction{
+		Name:        "get_time",
+		Description: "Get the current time in a timezone",
+		Parameters: api.ToolFunctionParameters{
+			Type:     "object",
+			Required: []string{"timezone"},
+			Properties: map[string]api.ToolProperty{
+				"timezone": {
+					Type:        api.PropertyType{"string"},
+					Description: "The timezone name",
+				},
+			},
+		},
+	},
+}
+
+var restaurantTool = api.Tool{
+	Type: "function",
+	Function: api.ToolFunction{
+		Name:        "search_restaurants",
+		Description: "Search for restaurants",
+		Parameters: api.ToolFunctionParameters{
+			Type:     "object",
+			Required: []string{"cuisine"},
+			Properties: map[string]api.ToolProperty{
+				"cuisine": {
+					Type:        api.PropertyType{"string"},
+					Description: "Type of cuisine",
+				},
+				"min_price": {
+					Type:        api.PropertyType{"number"},
+					Description: "Minimum price",
+				},
+				"max_price": {
+					Type:        api.PropertyType{"number"},
+					Description: "Maximum price",
+				},
+			},
+		},
+	},
+}