Sep 20, 2026
claude
chat-gpt
gemini
Claude Opus 5 vs GPT-5.6 Sol vs Gemini 3.7 Flash dla agentów do kodowania
I don’t have reliable information on models named “Claude Opus 5,” “GPT-5.6 Sol,” or “Gemini 3.7 Flash.” If these map to current offerings (e.g., Claude 3 Opus, an OpenAI GPT family model, and Gemini 1.5 Flash), please confirm or share the docs. Also, by “CometAPI,” do you mean Comet ML (comet.com) for experiment tracking? In the meantime, here’s a provider-agnostic framework you can use, with placeholders to fill once you confirm the exact models.
Scope and dimensions
- Cost
- Capture input tokens, output tokens, total tokens, per-1K-token price for input/output, and derived cost per task.
- Measure latency p50/p95, and throughput (requests/sec) under your concurrency.
- Track pass@1 success rate versus cost per success (USD per solved task).
- Record context window and tool call limits (function/tool use), as these impact agent designs and retries.
- Endpoints
- Anthropic (Claude family): POST https://api.anthropic.com/v1/messages
- Key fields: model, messages, max_tokens, temperature, tools/tool_choice, system.
- OpenAI (GPT family): POST https://api.openai.com/v1/chat/completions or https://api.openai.com/v1/responses
- Key fields: model, messages, temperature, tools, response_format, reasoning settings (if applicable).
- Google Gemini (Gemini family):
- Direct REST: POST https://generativelanguage.googleapis.com/v1beta/models/{model}:generateContent
- Vertex AI (recommended in production): location-specific endpoint with publisher path; key fields: model, contents, safety_settings, toolConfig/functions.
- Evaluation methods for coding agents
- Task suites
- Unit-test driven: MBPP, HumanEval(+), CodeContests, or your in-house tasks. Use deterministic seeds and pinned dependencies.
- End-to-end repo tasks: SWE-bench style with patch application and full test runs.
- Metrics
- Functional correctness: pass@1, pass@k; flaky-test detection; runtime errors vs assertion failures.
- Agent process: number of tool calls, steps taken, replans, time-to-first-correct, total wall-clock.
- Cost: dollars per task, per success; token mix; retry budgets consumed.
- Safety/guardrails: refusal rate, tool-call validation errors, sandbox violations.
- Harness best practices
- Isolate execution (dockerized sandbox).
- Enforce timeouts per step and per task.
- Normalize prompts and tools across models to ensure fairness.
- Log all intermediate steps, tool IO, and final artifacts for auditability.
- Fallback strategies with Comet (Comet ML) integration
- Policy design
- Primary/fast path: a fast/cheap model as default (e.g., “Flash”-class), budget- and latency-optimized.
- Secondary/strong path: a higher-quality model for retries or complex tasks (e.g., “Opus”-class).
- Tertiary path: a different vendor for resilience (diversity reduces correlated failures).
- Routing signals: static heuristics (task complexity classifier, code length, tool count), dynamic signals (time spent, partial test results, parse errors), and provider health (recent error rate/timeouts).
- Cutoffs: hard time budget, token/cost budget, and max retries per task.
- Observability with Comet
- Log for each attempt: model_name, latency_ms, input_tokens, output_tokens, cost_usd, success, failure_reason, route_level (primary/secondary/tertiary).
- Aggregate dashboards: success rate by route, cost per success, tail latency, error taxonomy (429, 5xx, tool errors).
- Attach artifacts: prompts, traces, patches, logs, failing tests, to enable regression analysis.
- Failure classes and actions
- Deterministic parsing or tool errors: immediate retry with same model/temperature=0 and stricter output schema.
- Timeouts/5xx/429: exponential backoff with jitter; if budget allows, escalate to next route.
- Repeated test failures: switch to strong model with “repair” prompt including failing traces.
Minimal example: provider-agnostic fallback with Comet (Python, pseudocode)
- Replace placeholders with your confirmed model IDs and keys.
from comet_ml import Experiment
import time
import requests
import os
# Config
ROUTES = [
{"provider": "google", "model": "gemini-FAST", "endpoint": "https://generativelanguage.googleapis.com/v1beta/models/gemini-FAST:generateContent", "api_key_env": "GEMINI_API_KEY"},
{"provider": "anthropic", "model": "claude-STRONG", "endpoint": "https://api.anthropic.com/v1/messages", "api_key_env": "ANTHROPIC_API_KEY"},
{"provider": "openai", "model": "gpt-ROBUST", "endpoint": "https://api.openai.com/v1/chat/completions", "api_key_env": "OPENAI_API_KEY"},
]
BUDGET_USD = 0.50 # per task
TIME_BUDGET_S = 120
MAX_RETRIES_PER_ROUTE = 2
def estimate_cost_usd(provider, input_tokens, output_tokens):
# Fill with your actual per-1K-token prices
# return cost_input + cost_output
return 0.0
def call_model(route, messages, tools=None, timeout_s=30):
headers = {}
payload = {}
t0 = time.time()
if route["provider"] == "anthropic":
headers = {
"x-api-key": os.getenv(route["api_key_env"]),
"content-type": "application/json",
"anthropic-version": "2023-06-01"
}
payload = {
"model": route["model"],
"messages": messages,
"max_tokens": 2048,
"temperature": 0,
"tools": tools or []
}
r = requests.post(route["endpoint"], json=payload, headers=headers, timeout=timeout_s)
r.raise_for_status()
# Extract text from Anthropics messages format
content = r.json()["content"][0]["text"]
usage = r.json().get("usage", {})
input_toks = usage.get("input_tokens", 0)
output_toks = usage.get("output_tokens", 0)
elif route["provider"] == "openai":
headers = {
"authorization": f"Bearer {os.getenv(route['api_key_env'])}",
"content-type": "application/json"
}
payload = {
"model": route["model"],
"messages": messages,
"temperature": 0,
"tools": tools or []
}
r = requests.post(route["endpoint"], json=payload, headers=headers, timeout=timeout_s)
r.raise_for_status()
j = r.json()
content = j["choices"][0]["message"]["content"]
usage = j.get("usage", {})
input_toks = usage.get("prompt_tokens", 0)
output_toks = usage.get("completion_tokens", 0)
elif route["provider"] == "google":
headers = {
"x-goog-api-key": os.getenv(route["api_key_env"]),
"content-type": "application/json"
}
# Gemini uses "contents" instead of "messages"; adapt your structure accordingly
contents = [{"role": "user", "parts": [{"text": m["content"]}]} for m in messages if m["role"] == "user"]
payload = {"contents": contents}
r = requests.post(route["endpoint"], json=payload, headers=headers, timeout=timeout_s)
r.raise_for_status()
j = r.json()
content = j["candidates"][0]["content"]["parts"][0]["text"]
# Gemini usage fields vary; may need separate token accounting
input_toks = 0
output_toks = 0
else:
raise ValueError("Unknown provider")
latency_ms = (time.time() - t0) * 1000
return content, input_toks, output_toks, latency_ms
def run_task_with_fallback(task_id, prompt, unit_test_fn):
experiment = Experiment(project_name="coding-agents")
total_cost = 0.0
start_time = time.time()
messages = [{"role": "user", "content": prompt}]
for level, route in enumerate(ROUTES):
retries = 0
while retries < MAX_RETRIES_PER_ROUTE:
try:
content, in_tok, out_tok, latency_ms = call_model(route, messages)
cost = estimate_cost_usd(route["provider"], in_tok, out_tok)
total_cost += cost
# Evaluate attempt
passed, fail_reason = unit_test_fn(content)
experiment.log_metrics({
"task_id": task_id,
"route_level": level,
"provider": route["provider"],
"model": route["model"],
"latency_ms": latency_ms,
"input_tokens": in_tok,
"output_tokens": out_tok,
"attempt_cost_usd": cost,
"passed": int(passed),
})
if passed:
experiment.log_other("final_route", f"{route['provider']}:{route['model']}")
experiment.log_metric("total_cost_usd", total_cost)
experiment.log_metric("wall_clock_s", time.time() - start_time)
return content
# If tests failed, optionally add a repair hint and retry
messages.append({"role": "user", "content": f"Tests failed: {fail_reason}. Please fix and provide corrected code only."})
retries += 1
# Budget/time checks
if total_cost > BUDGET_USD or time.time() - start_time > TIME_BUDGET_S:
experiment.log_other("termination", "budget_or_time_exceeded")
return None
except requests.exceptions.Timeout:
experiment.log_other("error", f"timeout_route_{level}")
retries += 1
except requests.exceptions.HTTPError as e:
code = e.response.status_code
experiment.log_other("error", f"http_{code}_route_{level}")
# Escalate on 429/5xx or after retries
retries += 1
except Exception as e:
experiment.log_other("error", f"unexpected_{str(e)[:80]}")
retries += 1
experiment.log_other("termination", "all_routes_exhausted")
return None
How to use this framework for your comparison
- Fill in actual model IDs and endpoints once you confirm the exact versions:
- Anthropic: e.g., claude-3-opus-20240229 or your target model.
- OpenAI: e.g., gpt-4.x, gpt-4o, or your target model.
- Google: e.g., gemini-1.5-flash or your target model.
- Implement estimate_cost_usd with your providers’ published pricing for input/output tokens.
- Build a small evaluation battery:
- 100 MBPP problems, pass@1; 30 SWE-bench tasks; your top-20 internal tasks.
- Use identical tools and prompts; set temperature=0 for reproducibility.
- Run the harness, then in Comet:
- Create dashboards for success rate, cost per success, latency distribution by route.
- Slice by problem type (string parsing, algorithms, database), and by code length.
- Decide a routing policy:
- If success rate difference between fast and strong models is small (<3%), prefer fast model globally.
- If specific categories show large deltas, route those categories to strong model.
- Set strict budgets per task to avoid runaway retries.
If you confirm the exact model names (or map them to current Claude/GPT/Gemini SKUs) and whether CometAPI refers to Comet ML, I can provide a concrete, filled-in comparison with precise endpoints, costs, and a ready-to-run fallback harness.